bug(mac): keyboard outputs English characters instead of the intended characters on Google Keep (Chrome)

### Describe the bug

I'm using Khmer Angkor keyboard (v2.2) on macOS Sequoia (v15.6). In Chrome (v139.0.7258.128), when trying to type using the keyboard in the body section of Google Keep entry, English characters are output instead of Khmer. In the title of the entry though, output Khmer characters. Please see the screenshot attached.

### Reproduce the bug

_No response_

### Expected behavior

_No response_

### Related issues

_No response_

### Keyman apps

- [ ] Keyman for Android
- [ ] Keyman for iPhone and iPad
- [ ] Keyman for Linux
- [x] Keyman for macOS
- [ ] Keyman for Windows
- [ ] Keyman Developer
- [ ] KeymanWeb
- [ ] Other - give details at bottom of form

### Keyman version

18.0.238

### Operating system

15.6

### Device

Macbook Pro

### Target application

Edited: Google Keep

### Browser

Chrome (v139.0.7258.128)

### Keyboard name

khmer_angkor

### Keyboard version

2.2

### Language name

Khmer

### Additional context

_No response_