bug(windows): Backspace cluster issue with TRADOS and Memsource

### Describe the bug
First reported on the Community Forum [Here ](https://community.software.sil.org/t/using-keyman-15-0-74-for-typing-burmese/7016)

When typing in Trados characters appears to be randomly removed or scrambled. It is most likely a cluster issue, when backspace is sent to the TRADOS app it is not deleting the last code point but rather a cluster.

### Reproduce the bug

In the SDL TRADOS studio app typing "tvSsif":
t v Shift+s s i f
Received: "လျှင်"
Expected: "အလျှင်"

Note the output is as expected after "tvS"
Recieved: အလှ
Expected: အလှ

When the next s is typed the inital Glyph gets removed
Recieved:လျှ
Expected:အလျှ

### Expected behavior

_No response_

### Related issues

This is similar to #7924
and even previous issues #1254 and #3698

### Keyman apps

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

### Keyman version

15.0.274

### Operating system

Windows 10

### Device

_No response_

### Target application

_No response_

### Browser

_No response_

### Keyboard name

_No response_

### Keyboard version

_No response_

### Language name

_No response_

### Additional context

_No response_