Undo/redo corrupt text of note

### Description

Undo/redo corrupt text of note

### To Reproduce

1. Edit blue monte
2. Triple tap screen to bring up iOS edit toolbar
3. Use undo/redo


### Expected behavior

_No response_

### FSNotes version

- 6.9.5 (311)

### macOS/iOS version

- iOS 17.7.2

### Additional context

_No response_