fix(infra): memory leak (#9013)

packages/frontend/core/src/modules/permissions/entities/permission.ts

@@ -159,4 +159,8 @@ export class WorkspacePermission extends Entity {
       permission
     );
   }
+
+  override dispose(): void {
+    this.revalidate.unsubscribe();
+  }
 }

packages/frontend/core/src/modules/permissions/services/permission.ts

@@ -15,6 +15,10 @@ export class WorkspacePermissionService extends Service {
     super();
   }
 
+  override dispose(): void {
+    this.permission?.dispose();
+  }
+
   async leaveWorkspace() {
     await this.store.leaveWorkspace(this.workspaceService.workspace.id);
     this.workspacesService.list.revalidate();