Auto-snapshot out of sync with current flows

### Current Behavior

Reported by customer on FFC - the latest auto-snapshot of their instance is different to the current deployed flows. Not sure how that is possible - nor if it can be recreated. I did look at their snapshot/flows and confirmed the difference.

Worth noting the snapshot was 2.4Mb in size - in case there's a timing issue here.

### Expected Behavior

Auto-snapshot to reliably be the latest deployed flows.

### Steps To Reproduce

Unknown

### Environment

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

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

I can not provide an initial effort estimate