fix: restore isCustom gate in metadata label resolvers (#21432)

## Context

#21228 removed the stored `isCustom` column and, with it, the `isCustom`
early-return in `resolveObjectMetadataStandardOverride` /
`resolveFieldMetadataStandardOverride`, on the assumption that falling
through the `standardOverrides` checks was equivalent.

It isn't: custom object/field labels now reach the Lingui lookup. A
custom label that collides with a standard catalog string (e.g. a custom
field labeled "Status") gets translated for non-English locales against
the user's intent, and every other custom label pays a hash + catalog
miss — and, in production, an "Uncompiled message detected" warning
(#21415) — on each metadata resolution.

## Fix

Restore the gate. `isCustom` is no longer stored, so call sites that
build the resolver input from flat entities (dataloader,
minimal-metadata, view controller, command-menu-item navigation context)
derive it via `belongsToTwentyStandardApp`; GraphQL resolvers keep
passing DTOs, which already carry the derived value.

## Testing

- Unit tests for both resolvers, including a new regression test: a
custom label matching a standard catalog entry is returned verbatim,
Lingui never called.

---------

Co-authored-by: Weiko <corentin@twenty.com>

packages/twenty-server/src/engine/metadata-modules/field-metadata/utils/__tests__/resolve-field-metadata-standard-override.util.spec.ts

@@ -26,6 +26,7 @@ describe('resolveFieldMetadataStandardOverride', () => {
         label: 'Custom Label',
         description: 'Custom Description',
         icon: 'custom-icon',
+        isCustom: true,
         standardOverrides: undefined,
       };
 
@@ -39,11 +40,36 @@ describe('resolveFieldMetadataStandardOverride', () => {
       expect(result).toBe('Custom Label');
     });
 
+    it('should never translate a custom label even when it matches a standard catalog entry', () => {
+      const fieldMetadata = {
+        label: 'Status',
+        description: 'Custom Description',
+        icon: 'custom-icon',
+        isCustom: true,
+        standardOverrides: undefined,
+      };
+
+      mockGenerateMessageId.mockReturnValue('status.message.id');
+      mockI18n._.mockReturnValue('Statut');
+
+      const result = resolveFieldMetadataStandardOverride(
+        fieldMetadata,
+        'label',
+        'fr-FR',
+        mockI18n,
+      );
+
+      expect(result).toBe('Status');
+      expect(mockGenerateMessageId).not.toHaveBeenCalled();
+      expect(mockI18n._).not.toHaveBeenCalled();
+    });
+
     it('should return the field value for custom description field', () => {
       const fieldMetadata = {
         label: 'Custom Label',
         description: 'Custom Description',
         icon: 'custom-icon',
+        isCustom: true,
         standardOverrides: undefined,
       };
 
@@ -62,6 +88,7 @@ describe('resolveFieldMetadataStandardOverride', () => {
         label: 'Custom Label',
         description: 'Custom Description',
         icon: 'custom-icon',
+        isCustom: true,
         standardOverrides: undefined,
       };
 

packages/twenty-server/src/engine/metadata-modules/field-metadata/utils/resolve-field-metadata-standard-override.util.ts

@@ -10,7 +10,7 @@ import { type FieldMetadataDTO } from 'src/engine/metadata-modules/field-metadat
 export const resolveFieldMetadataStandardOverride = (
   fieldMetadata: Pick<
     FieldMetadataDTO,
-    'label' | 'description' | 'icon' | 'standardOverrides'
+    'label' | 'description' | 'icon' | 'isCustom' | 'standardOverrides'
   >,
   labelKey: 'label' | 'description' | 'icon',
   locale: keyof typeof APP_LOCALES | undefined,
@@ -18,6 +18,13 @@ export const resolveFieldMetadataStandardOverride = (
 ): string => {
   const safeLocale = locale ?? SOURCE_LOCALE;
 
+  // Custom field labels are user-authored: never overridden nor translated.
+  // Without this gate, a label colliding with a standard catalog string
+  // (e.g. "Status") would get translated against the user's intent.
+  if (fieldMetadata.isCustom) {
+    return fieldMetadata[labelKey] ?? '';
+  }
+
   if (labelKey === 'icon' && isDefined(fieldMetadata.standardOverrides?.icon)) {
     return fieldMetadata.standardOverrides.icon;
   }