bug(developer): font defined for text area in the debugger affected Code view of the On-Screen tab

### Describe the bug

Right click in text area when the Debugger Mode is on and select 48p for the font size better visibility of the character being typed/tested. Now go to the On-Screen tab > Code view to see unexpected size of text as shown in the screenshot below.

### Reproduce the bug

_No response_

### Expected behavior

The font size in Code view in the On-Screen tab should not be affected by the setting done for the text area in the debugger.

### Related issues

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### Keyman apps

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

### Keyman version

16.0.139

### Operating system

_No response_

### 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_