fix: Add useEffect hook to close modal when reconnecting modal is open (#31200)

## Description
This pull request adds the useEffect hook to the
CreateNewAppFromTemplatesWrapper component. The useEffect hook listens
for changes in the isReconnectingModalOpen state and closes the modal
when it is true. This ensures that the modal is closed when the
reconnecting modal is open.

#### PR fixes following issue(s)
Fixes # (issue number)
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about this first
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#### Media
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#### Type of change
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- Bug fix (non-breaking change which fixes an issue)
- New feature (non-breaking change which adds functionality)
- Breaking change (fix or feature that would cause existing
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- Chore (housekeeping or task changes that don't impact user perception)
- This change requires a documentation update
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## Testing
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#### How Has This Been Tested?
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- [ ] Manual
- [ ] JUnit
- [ ] Jest
- [ ] Cypress
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#### Test Plan
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#### Issues raised during DP testing
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## Checklist:
#### Dev activity
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my own code
- [ ] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] PR is being merged under a feature flag


#### QA activity:
- [ ] [Speedbreak
features](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#speedbreakers-)
have been covered
- [ ] Test plan covers all impacted features and [areas of
interest](https://github.com/appsmithorg/TestSmith/wiki/Guidelines-for-test-plans#areas-of-interest-)
- [ ] Test plan has been peer reviewed by project stakeholders and other
QA members
- [ ] Manually tested functionality on DP
- [ ] We had an implementation alignment call with stakeholders post QA
Round 2
- [ ] Cypress test cases have been added and approved by SDET/manual QA
- [ ] Added `Test Plan Approved` label after Cypress tests were reviewed
- [ ] Added `Test Plan Approved` label after JUnit tests were reviewed


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit


- **New Features**
- Introduced a new state to automatically close the modal when certain
conditions are met, enhancing user experience.
	- Adjusted the control flow in the test scenario to improve accuracy.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/client/cypress/e2e/Regression/ClientSide/Onboarding/StartFromScratch_spec.ts

@@ -1,86 +0,0 @@
-import template from "../../../../locators/TemplatesLocators.json";
-import { featureFlagIntercept } from "../../../../support/Objects/FeatureFlags";
-import {
-  agHelper,
-  onboarding,
-  dataSources,
-  templates,
-  homePage,
-} from "../../../../support/Objects/ObjectsCore";
-import {
-  AppSidebar,
-  AppSidebarButton,
-} from "../../../../support/Pages/EditorNavigation";
-
-describe(
-  "Start with scratch userflow",
-  { tags: ["@tag.excludeForAirgap", "@tag.Templates"] },
-  function () {
-    beforeEach(() => {
-      homePage.Signout(true);
-      featureFlagIntercept(
-        {
-          ab_show_templates_instead_of_blank_canvas_enabled: true,
-          ab_create_new_apps_enabled: true,
-        },
-        false,
-      );
-      agHelper.GenerateUUID();
-      cy.get("@guid").then((uid) => {
-        homePage.SignUp(`${uid}@appsmithtest.com`, uid as unknown as string);
-      });
-      agHelper.GetNClick(onboarding.locators.startFromScratchCard);
-      onboarding.closeIntroModal();
-      featureFlagIntercept({
-        ab_show_templates_instead_of_blank_canvas_enabled: true,
-      });
-      agHelper.AssertElementLength(
-        templates.locators._buildingBlockCardOnCanvas,
-        3,
-      );
-    });
-
-    it("1. onboarding flow - should check page entity selection in explorer", function () {
-      agHelper.GetNClick(onboarding.locators.seeMoreButtonOnCanvas, 0, true);
-
-      agHelper.AssertElementVisibility(template.templateDialogBox);
-
-      const filterItemWrapper = agHelper.GetElement(".filter-wrapper");
-
-      const templateFilterItemSelectedIcon = filterItemWrapper.find(
-        templates.locators._templateFilterItemSelectedIcon,
-      );
-      templateFilterItemSelectedIcon.should("have.length", 1);
-      templateFilterItemSelectedIcon
-        .first()
-        .prev()
-        .should("have.text", "Building Blocks");
-      agHelper.GetNClick(template.closeButton);
-    });
-
-    it("2. `Connect your data` pop up should come up when we fork a building block from canvas.", function () {
-      agHelper.GetNClick(templates.locators._buildingBlockCardOnCanvas);
-
-      agHelper.WaitUntilEleDisappear("Importing template");
-      agHelper.AssertElementVisibility(
-        templates.locators._datasourceConnectPromptSubmitBtn,
-      );
-      agHelper.GetNClick(templates.locators._datasourceConnectPromptSubmitBtn);
-      cy.url().should("include", "datasources/NEW");
-    });
-
-    it("3. `Connect your data` pop up should NOT come up when user already has a datasource.", function () {
-      dataSources.CreateMockDB("Users");
-      AppSidebar.navigate(AppSidebarButton.Editor);
-
-      agHelper.GetNClick(templates.locators._buildingBlockCardOnCanvas, 0);
-
-      agHelper.WaitUntilEleDisappear("Importing template");
-
-      agHelper.AssertElementAbsence(
-        templates.locators._datasourceConnectPromptSubmitBtn,
-        4000,
-      );
-    });
-  },
-);

app/client/src/ce/pages/Applications/CreateNewAppFromTemplateModal/CreateNewAppFromTemplatesWrapper.tsx

@@ -1,5 +1,7 @@
-import React from "react";
+import React, { useEffect } from "react";
 import CreateNewAppFromTemplatesModal from ".";
+import { getIsReconnectingDatasourcesModalOpen } from "@appsmith/selectors/entitiesSelector";
+import { useSelector } from "react-redux";
 
 interface Props {
   currentWorkspaceId: string;
@@ -12,6 +14,16 @@ const CreateNewAppFromTemplatesWrapper = ({
   isOpen,
   onModalClose,
 }: Props) => {
+  const isReconnectingModalOpen = useSelector(
+    getIsReconnectingDatasourcesModalOpen,
+  );
+
+  useEffect(() => {
+    if (isReconnectingModalOpen) {
+      onModalClose();
+    }
+  }, [isReconnectingModalOpen]);
+
   return (
     <CreateNewAppFromTemplatesModal
       currentWorkSpaceId={currentWorkspaceId}