bug(iOS): Subkey menu appears and stuck with the OSK after long press a letter key when Keyman starts

### Describe the bug

I noticed that the subkey menu appears and stuck up with the OSK after long pressing any letter key when the keyman starts.

### Reproduce the bug

1. Install Keyman 17.0.117-alpha build.
2. Open Keyman In-App.
3. Simultaneously, long press any letter key on the OSK.
4. Close the Get Started dialog.

Here, I noticed that the subkey menu is showing and stuck with the OSK.

I have attached the screenshot as well as the video file for reference.

Note: Able to reproduce it in the iPad Simulator.

..key stuck on the keyboard

..Subkey menu appears and stuck with the OSK

https://github.com/keymanapp/keyman/assets/19683143/f5d73f5f-e5e9-4d38-a16f-06f005469d41

### Expected behavior

Subkey menu should not stick with the any letter key.

### Related issues

_No response_

### Keyman apps

- [ ] Keyman for Android
- [X] 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

17.0.117-alpha build

### Operating system

iOS 15.0, iOS 16.4

### Device

iPhone 14 Pro Max Simulator, iPad (10 generation) Simulator

### Target application

_No response_

### Browser

_No response_

### Keyboard name

_No response_

### Keyboard version

_No response_

### Language name

_No response_

### Additional context

_No response_