chore: Added test for groupAndSortEntitySegmentList (#32007)

## Description

This PR adds test to check the functionality of
groupAndSortEntitySegmentList

Fixes #31872

## Automation

/ok-to-test tags="@tag.Sanity"

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!IMPORTANT]  
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/8419360291>
> Commit: `f4858d4b452c2662ddff53a1e7c1c5054fb02494`
> Cypress dashboard url: <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=8419360291&attempt=1"
target="_blank">Click here!</a>
> All cypress tests have passed 🎉🎉🎉

<!-- end of auto-generated comment: Cypress test results  -->





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

## Summary by CodeRabbit

- **Tests**
- Introduced tests for the `groupAndSortEntitySegmentList` function to
ensure entity segment lists are grouped and sorted alphabetically
correctly.

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

app/client/src/ce/selectors/appIDESelectors.test.ts

@@ -0,0 +1,64 @@
+import type { EntityItem } from "@appsmith/entities/IDE/constants";
+import { groupAndSortEntitySegmentList } from "./appIDESelectors";
+import { PluginType } from "entities/Action";
+
+describe("groupAndSortEntitySegmentList", () => {
+  it("should group and sort entity segment list alphabetically", () => {
+    const items: EntityItem[] = [
+      {
+        title: "BalanceTransactions",
+        type: PluginType.API,
+        key: "1",
+        group: "Users",
+      },
+      { title: "AllUsers", type: PluginType.API, key: "2", group: "Users" },
+      { title: "Query 1", type: PluginType.SAAS, key: "3", group: "Movies" },
+      {
+        title: "Query 2",
+        type: PluginType.SAAS,
+        key: "4",
+        group: "Movies",
+      },
+      {
+        title: "Query 3",
+        type: PluginType.SAAS,
+        key: "5",
+        group: "Movies",
+      },
+      { title: "Random", type: PluginType.API, key: "6" },
+    ];
+
+    const result = groupAndSortEntitySegmentList(items);
+
+    // Users, Movies, NA
+    expect(result.length).toBe(3);
+
+    // Check sorting of groups alphabetically
+    expect(result.map((group) => group.group)).toEqual([
+      "Movies",
+      "NA",
+      "Users",
+    ]);
+
+    // Check sorting of items within each group alphabetically
+    expect(result[0].items.map((item) => item.title)).toEqual([
+      "Query 1",
+      "Query 2",
+      "Query 3",
+    ]);
+    expect(result[2].items.map((item) => item.title)).toEqual([
+      "AllUsers",
+      "BalanceTransactions",
+    ]);
+
+    // Check items without group sorted correctly under "NA" group
+    expect(result[1].items.map((item) => item.title)).toEqual(["Random"]);
+  });
+
+  it("should handle empty input", () => {
+    const result = groupAndSortEntitySegmentList([]);
+    expect(result).toEqual([]);
+  });
+
+  // Add more test cases to cover edge cases or specific scenarios
+});