UI is not updated and text can not be edited with many blocks

@tiensonqin is already working on this.

Since Jun 22, 2026.

### Search first

- [x] I searched and no similar issues were found

### What Happened?

I had 1000 blocks on a page and tried to select and delete many at once, but that seem to break the UI, so now i can't delete selected blocks or edit the text.

Demo: https://www.youtube.com/watch?v=pYiABQDaMyA

The UI shows the blocks, but page export as EDN and CLI show no blocks:

```
{:pages-and-blocks [{:page {:block/title "AB"}, :blocks []}],
:logseq.db.sqlite.export/export-type :page}
```

### Reproduce the Bug

1. have 1000 blocks
2. try to delete them all by selecting many in the UI and deleting them

### Expected Behavior

the UI should be stable and not break

### Screenshots

_No response_

### Files

_No response_

### Browser, Desktop or Mobile Platform Information

NixOS 25.11.10684.8fd9daa3db09
Logseq-linux-x86_64-2.0.1-alpha+nightly.20260619

### Additional Context

### Workaround

Reloading/restarting the app fixes the issue. It's a temporary state.

### Are you willing to submit a PR? If you know how to fix the bug.

- [ ] I'm willing to submit a PR (Thank you!)