test: Cypress | Skip bug test from MultiSelect5_spec.ts (#30871)

## Description
- This PR does below:
- Flaky fixes /ServerSide/GenerateCRUD/MongoURI_Spec.ts (no fix needed,
multiple runs passing, removed from skipped list)
-
cypress/e2e/Regression/ClientSide/Widgets/Multiselect/MultiSelect5_spec.ts
(skipped bug test & unskipping spec from CI runs)

#### Type of change
- Script fix (non-breaking change which fixes an issue)

## Testing

#### How Has This Been Tested?
- [X] Cypress CI runs


## Checklist:
#### QA activity:
- [X] Added `Test Plan Approved` label after Cypress tests were reviewed

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

## Summary by CodeRabbit

- **Tests**
- Updated the test specification for limited tests in the ServerSide
GenerateCRUD section to improve coverage and reliability.
- Switched test spec from `Fork_Template_spec.js` to `MongoURI_Spec.ts`
and `MultiSelect5_spec.ts` in the ClientSide Widgets Multiselect
section.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

app/client/cypress/e2e/Regression/ClientSide/Widgets/Multiselect/MultiSelect5_spec.ts

@@ -308,7 +308,8 @@ describe(
       );
     });
 
-    it("8. Verify validation error in default selected values", () => {
+    //Skipping due to open bug #16870
+    it.skip("8. Bug # 16870 - Verify validation error in default selected values", () => {
       EditorNavigation.SelectEntityByName("NewMultiSelect", EntityType.Widget);
 
       propPane.MoveToTab("Content");
@@ -316,7 +317,6 @@ describe(
       propPane.UpdatePropertyFieldValue(
         "Default selected values",
         '["GREEN1", "RED1"]',
-        true,
       );
 
       agHelper.VerifyEvaluatedErrorMessage(
@@ -329,21 +329,17 @@ describe(
       propPane.UpdatePropertyFieldValue(
         "Source Data",
         '[{"name": "Green", "code":"GREEN1"}, { "name": "Red","code": "RED1" }]',
-        true,
       );
 
       agHelper.FocusElement(
         locators._propertyInputField("Default selected values"),
       );
-
-      agHelper.Sleep(1000);
       agHelper.AssertElementAbsence(locators._evaluatedErrorMessage);
 
       // Changes options to bring back validation error
       propPane.UpdatePropertyFieldValue(
         "Source Data",
         '[{"name": "Green", "code":"GREEN1"}, { "name": "Red","code": "RED" }]',
-        true,
       );
 
       agHelper.FocusElement(
@@ -373,8 +369,6 @@ describe(
         '{{["GREEN1"]}}',
         true,
       );
-
-      agHelper.Sleep(1000);
       agHelper.AssertElementAbsence(locators._evaluatedErrorMessage);
     });
   },