iOS: Too much space below markdown toolbar when autosuggestions are turned off

[personalizedrefrigerator]

Environment

Joplin version: e40d733
Platform: Mobile
OS specifics: iOS 15.6.1

Steps to reproduce

0. Disable auto-suggestions
1. Enable the beta editor
2. Edit a note
3. Show the keyboard

Describe what you expected to happen

The markdown toolbar should be just above the keyboard, like it is on Android.

Possible solution

• Add a setting to enable/disable additional space below the toolbar
  • In the markdown toolbar PR, it was observed that some iOS devices have keyboards that overlap the toolbar. My phone appears to be the opposite -- the toolbar, even without the additional padding, is well above the keyboard.
• Wrap the toolbar in a KeyboardAvoidingView -- this seems to have the same issue as manually adding padding. Regardless, the screen is already wrapped in a KeyboardAvoidingView.
• Wrap the toolbar in an InputAccessoryView. We're using a WebView to edit text. As such, it seems that we can't use an InputAccessoryView because it requires an inputAccessoryViewID property.
• Make the markdown toolbar draggable -- moving it up/down when the keyboard is visible adjusts the space below it.
• Move the markdown toolbar to the top of the screen.

[personalizedrefrigerator]

On my device, I’m also noticing this when I do have the predictive text toolbar enabled: