Double banners shown when reaching remote instance limit

### Current Behavior

https://github.com/user-attachments/assets/9749b9a6-7756-4638-b95e-ff4cb9491a48

### Expected Behavior

only one banner should be present. Also, one of the banner references instances not remote instances

### Steps To Reproduce

see linked video

### Environment

- FlowFuse version: 2.14.1
- Node.js version: n/a
- npm version: n/a
- Platform/OS: n/a
- Browser: n/a

### Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate