Fix multi-workspace-registration (#19685)

## Before

<img width="1512" height="915" alt="image"
src="https://github.com/user-attachments/assets/5cb05f76-b672-404e-b31d-ca455802f97a"
/>


## After

<img width="1512" height="726" alt="image"
src="https://github.com/user-attachments/assets/58229c4c-3ac6-4428-9c4d-3586a2b9ee36"
/>

packages/twenty-server/src/engine/core-modules/admin-panel/admin-panel.resolver.ts

@@ -71,6 +71,7 @@ import { ModelsDevModelSuggestionDTO } from './dtos/models-dev-model-suggestion.
 import { ModelsDevProviderSuggestionDTO } from './dtos/models-dev-provider-suggestion.dto';
 import { QueueMetricsDataDTO } from './dtos/queue-metrics-data.dto';
 import { SetMaintenanceModeInput } from './dtos/set-maintenance-mode.input';
+import { AuthWorkspace } from 'src/engine/decorators/auth/auth-workspace.decorator';
 
 @UsePipes(ResolverValidationPipe)
 @MetadataResolver()
@@ -680,4 +681,12 @@ export class AdminPanelResolver {
   ): Promise<AdminChatThreadMessagesDTO> {
     return this.adminChatService.getChatThreadMessages(threadId);
   }
+
+  @UseGuards(AdminPanelGuard)
+  @Query(() => ApplicationRegistrationEntity)
+  async findOneAdminApplicationRegistration(
+    @Args('id') id: string,
+  ): Promise<ApplicationRegistrationEntity> {
+    return this.applicationRegistrationService.findOneByIdGlobal(id);
+  }
 }