fix: Missing permission on selector in permissions dialog

app/stores/CollectionGroupMembershipsStore.ts

@@ -87,4 +87,16 @@ export default class CollectionGroupMembershipsStore extends Store<CollectionGro
       }
     });
   };
+
+  /**
+   * Find a collection group membership by collectionId and groupId
+   *
+   * @param collectionId The collection ID
+   * @param groupId The group ID
+   * @returns The collection group membership or undefined if not found.
+   */
+  find = (collectionId: string, groupId: string) =>
+    Array.from(this.data.values()).find(
+      (m) => m.groupId === groupId && m.collectionId === collectionId
+    );
 }

app/stores/MembershipsStore.ts

@@ -91,11 +91,21 @@ export default class MembershipsStore extends Store<Membership> {
     collectionId: string;
     userId: string;
   }) => {
-    const membership = Array.from(this.data.values()).find(
-      (m) => m.userId === userId && m.collectionId === collectionId
-    );
+    const membership = this.find(collectionId, userId);
     if (membership) {
       this.remove(membership.id);
     }
   };
+
+  /**
+   * Find a collection user membership by collectionId and userId
+   *
+   * @param collectionId The collection ID
+   * @param userId The user ID
+   * @returns The collection user membership or undefined if not found.
+   */
+  find = (collectionId: string, userId: string) =>
+    Array.from(this.data.values()).find(
+      (m) => m.userId === userId && m.collectionId === collectionId
+    );
 }