bug(android): when switching keyboards, backspace can sometimes stop working properly

### Describe the bug

Sometimes, when I type in one script and then switch keyboards to another script, the backspace key gets stuck and will not backspace. This only happens when I hold the backspace key down to delete a bunch of characters. If I just hit the backspace once, it doesn't get stuck.

However, I cannot reliably reproduce the issue, so I do not yet know what triggers this behavior.

### Reproduce the bug

1. Open Keyman Beta 17.0.322-beta
2. Change keyboards to `sil_euro_latin`
3. Type some text with perhaps a space
4. Switch keyboards to an Arabic script keyboard like `afghan_turkmen`
5. Type some arabic script text. Perhaps type an enter or switch layers, press and hold the backspace key.

### Expected behavior

I expect a bunch of characters to get deleted.
Often it just doesn't move. If I think type backspace once, I can then press and hold and it will backspace.

### Related issues

_No response_

### Keyman apps

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

### Keyman version

17.0.322-beta

### Operating system

Android 14

### Device

Samsung S21 5G

### Target application

_No response_

### Browser

_No response_

### Keyboard name

sil_euro_latin and afghan_turkmen

### Keyboard version

3.0.2 and 2.0

### Language name

_No response_

### Additional context

I have two recordings which I will try to upload.

This first one I was not talking. The backspace worked fine as I typed Arabic script. At the very end it got stuck. It's too big to upload so here's the [link](https://drive.google.com/file/d/1n3wLwUVsXtiXLkdOkdVHCQJJVvFx48iP/view?usp=drive_link).

This second one I tried to talk through what was happening.

https://github.com/keymanapp/keyman/assets/7071907/ce94fb92-7d2e-47bb-b36e-2ec0405236b7

I don't know how to reproduce this, if I figure it out, I will submit more information.