fix issues updating avatar (#870)

web/src/lib/stores/user_store.ts

@@ -139,7 +139,17 @@ export async function users_update(user: User | { [K in keyof User]?: User[K] },
     }
 
     const model: User = await r.json();
-    currentUser.set(model);
+    const existing = get(currentUser);
+    const merged: User = {
+        ...(existing ?? {}),
+        ...model,
+    } as User;
+
+    if (!(merged as any).actor && (existing as any)?.actor) {
+        (merged as any).actor = (existing as any).actor;
+    }
+
+    currentUser.set(merged);
 }
 
 export async function users_delete(user: User) {
@@ -180,4 +190,4 @@ export async function users_confirm_reset(reset: { password: string, passwordCon
 
     return await r.json();
 
-}
+}