Fix deactivated tabs not visible in new tab action (#19811)

## Context
On custom objects, clicking "+ New Tab" on a record page layout never
exposed deactivated tabs for reactivation, even though isActive: false
tabs were correctly returned by the API. Standard objects worked fine.

## Fix
isReactivatableTab gated reactivation on tab.applicationId ===
objectMetadata.applicationId. For custom objects these two ids are
intentionally different.
This check was unnecessary after all, we simply want to check if a tab
is inactive (only non-custom entities can be de-activated) 👍

<img width="694" height="551" alt="Screenshot 2026-04-17 at 18 14 28"
src="https://github.com/user-attachments/assets/42485cb2-8be5-4a55-a311-479ed3226908"
/>

packages/twenty-front/src/modules/page-layout/utils/__tests__/isReactivatableTab.test.ts

@@ -17,35 +17,15 @@ const makeTab = (overrides: Partial<PageLayoutTab> = {}): PageLayoutTab =>
   }) as unknown as PageLayoutTab;
 
 describe('isReactivatableTab', () => {
-  it('should return true when tab is inactive and applicationId matches', () => {
-    const tab = makeTab({ isActive: false, applicationId: 'app-1' });
+  it('should return true when tab is inactive', () => {
+    const tab = makeTab({ isActive: false });
 
-    expect(isReactivatableTab({ tab, objectApplicationId: 'app-1' })).toBe(
-      true,
-    );
+    expect(isReactivatableTab(tab)).toBe(true);
   });
 
   it('should return false when tab is active', () => {
-    const tab = makeTab({ isActive: true, applicationId: 'app-1' });
+    const tab = makeTab({ isActive: true });
 
-    expect(isReactivatableTab({ tab, objectApplicationId: 'app-1' })).toBe(
-      false,
-    );
-  });
-
-  it('should return false when applicationId does not match', () => {
-    const tab = makeTab({ isActive: false, applicationId: 'app-1' });
-
-    expect(isReactivatableTab({ tab, objectApplicationId: 'app-2' })).toBe(
-      false,
-    );
-  });
-
-  it('should return false when objectApplicationId is undefined', () => {
-    const tab = makeTab({ isActive: false, applicationId: 'app-1' });
-
-    expect(isReactivatableTab({ tab, objectApplicationId: undefined })).toBe(
-      false,
-    );
+    expect(isReactivatableTab(tab)).toBe(false);
   });
 });

packages/twenty-front/src/modules/page-layout/utils/isReactivatableTab.ts

@@ -1,11 +1,4 @@
 import { type PageLayoutTab } from '@/page-layout/types/PageLayoutTab';
 
-export const isReactivatableTab = ({
-  tab,
-  objectApplicationId,
-}: {
-  tab: PageLayoutTab;
-  objectApplicationId: string | undefined;
-}): boolean => {
-  return !tab.isActive && tab.applicationId === objectApplicationId;
-};
+export const isReactivatableTab = (tab: PageLayoutTab): boolean =>
+  !tab.isActive;