Account change details (#5190)

## Summary
Accounts setting page to change a users password or username
Fix huge bug were users can see admin settings due to hard code
admin=true
## Testing
- not run (not requested)

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[Codex
Task](https://chatgpt.com/codex/tasks/task_b_6934b8ecdbf08328a0951b46db77dfd2)

frontend/src/core/components/shared/AppConfigModal.tsx

@@ -69,7 +69,7 @@ const AppConfigModalInner: React.FC<AppConfigModalProps> = ({ opened, onClose })
   }), []);
 
   // Get isAdmin and runningEE from app config
-  const isAdmin = true // config?.isAdmin ?? false;
+  const isAdmin = config?.isAdmin ?? false;
   const runningEE = config?.runningEE ?? false;
   const loginEnabled = config?.enableLogin ?? false;