chore: Refactor feature flag `release_show_create_app_from_templates_…

…enabled` (#31991)

## Description
Removed the feature flag
`release_show_create_app_from_templates_enabled` import and usage in the
WorkspaceAction component were refactored.

Fixes #`Issue Number`  
_or_  
Fixes `Issue URL`
> [!WARNING]  
> _If no issue exists, please create an issue first, and check with the
maintainers if the issue is valid._

## Automation

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

### 🔍 Cypress test results
<!-- This is an auto-generated comment: Cypress test results  -->
> [!IMPORTANT]  
> Workflow run:
<https://github.com/appsmithorg/appsmith/actions/runs/8373858785>
> Commit: `8e813e49585b11592412bf1d194d847a7753ea60`
> Cypress dashboard url: <a
href="https://internal.appsmith.com/app/cypress-dashboard/rundetails-65890b3c81d7400d08fa9ee5?branch=master&workflowId=8373858785&attempt=1"
target="_blank">Click here!</a>
> All cypress tests have passed 🎉🎉🎉

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

app/client/cypress/support/Pages/HomePage.ts

@@ -1,9 +1,8 @@
-import { ObjectsRegistry } from "../Objects/Registry";
-import { REPO, CURRENT_REPO } from "../../fixtures/REPO";
+import { CURRENT_REPO, REPO } from "../../fixtures/REPO";
 import HomePageLocators from "../../locators/HomePage";
 import SignupPageLocators from "../../locators/SignupPage.json";
+import { ObjectsRegistry } from "../Objects/Registry";
 import { AppSidebar, PageLeftPane } from "./EditorNavigation";
-import { featureFlagIntercept } from "../Objects/FeatureFlags";
 export class HomePage {
  private agHelper = ObjectsRegistry.AggregateHelper;
  private locator = ObjectsRegistry.CommonLocators;
@@ -330,9 +329,6 @@ export class HomePage {
  }
 
  public OpenTemplatesDialogInStartFromTemplates() {
- featureFlagIntercept({
- release_show_create_app_from_templates_enabled: true,
- });
  this.agHelper.GetNClick(this._homePageAppCreateBtn, 0, true);
  this.agHelper.GetNClick(this._newButtonCreateApplicationFromTemplates);
  this.agHelper.AssertElementVisibility(this._createAppFromTemplatesDialog);

app/client/src/ce/entities/FeatureFlag.ts

@@ -44,8 +44,6 @@ export const FEATURE_FLAG = {
  "rollout_consolidated_page_load_fetch_enabled",
  release_actions_redesign_enabled: "release_actions_redesign_enabled",
  rollout_editor_pane_segments_enabled: "rollout_editor_pane_segments_enabled",
- release_show_create_app_from_templates_enabled:
- "release_show_create_app_from_templates_enabled",
  rollout_remove_feature_walkthrough_enabled:
  "rollout_remove_feature_walkthrough_enabled",
  release_drag_drop_building_blocks_enabled:
@@ -90,7 +88,6 @@ export const DEFAULT_FEATURE_FLAG_VALUE: FeatureFlags = {
  rollout_consolidated_page_load_fetch_enabled: false,
  release_actions_redesign_enabled: false,
  rollout_editor_pane_segments_enabled: false,
- release_show_create_app_from_templates_enabled: false,
  rollout_remove_feature_walkthrough_enabled: false,
  rollout_js_enabled_one_click_binding_enabled: false,
  rollout_side_by_side_enabled: false,

app/client/src/ce/pages/Applications/WorkspaceAction.tsx

@@ -17,11 +17,9 @@ import {
  createMessage,
 } from "@appsmith/constants/messages";
 import type { Workspace } from "@appsmith/constants/workspaceConstants";
-import { FEATURE_FLAG } from "@appsmith/entities/FeatureFlag";
 import { getIsCreatingApplicationByWorkspaceId } from "@appsmith/selectors/applicationSelectors";
 import { getIsFetchingApplications } from "@appsmith/selectors/selectedWorkspaceSelectors";
 import { hasCreateNewAppPermission } from "@appsmith/utils/permissionHelpers";
-import { useFeatureFlag } from "utils/hooks/useFeatureFlag";
 
 export interface WorkspaceActionProps {
  workspace: Workspace;
@@ -47,9 +45,6 @@ function WorkspaceAction({
  const isCreatingApplication = Boolean(
  useSelector(getIsCreatingApplicationByWorkspaceId(workspace.id)),
  );
- const isCreateAppFromTemplatesEnabled = useFeatureFlag(
- FEATURE_FLAG.release_show_create_app_from_templates_enabled,
- );
 
  const openActionMenu = useCallback(() => {
  setIsActionMenuOpen(true);
@@ -97,16 +92,16 @@ function WorkspaceAction({
  {createMessage(NEW_APP)}
  </MenuItem>
  {<Divider className="!block mb-[2px]" />}
- {isCreateAppFromTemplatesEnabled && (
-  <MenuItem
-  data-testid="t--workspace-action-create-app-from-template"
-  disabled={!hasCreateNewApplicationPermission}
-  onSelect={() => onStartFromTemplate(workspaceId)}
-  startIcon="layout-2-line"
-  >
-  {createMessage(NEW_APP_FROM_TEMPLATE)}
-  </MenuItem>
- )}
+
+ <MenuItem
+ data-testid="t--workspace-action-create-app-from-template"
+ disabled={!hasCreateNewApplicationPermission}
+ onSelect={() => onStartFromTemplate(workspaceId)}
+ startIcon="layout-2-line"
+ >
+ {createMessage(NEW_APP_FROM_TEMPLATE)}
+ </MenuItem>
+
  {enableImportExport && hasCreateNewApplicationPermission && (
  <MenuItem
  data-testid="t--workspace-import-app"