bug(ios): RTL keyboards on iOS are not marked as right-to-left

**Describe the bug**
My right-to-left language keyboard doesn't signal to iOS that it is right-to-left. This means text is not right-aligned and does not flow right to left. One serious side-effect is that punctuation like period or colon (which are used bi-directionally across languages) gets put on the wrong side of the text. System keyboards for right-to-left languages in iOS (like Arabic) work as expected -- right aligned with right-to-left flow.

**To Reproduce**
1. Open the built-in Notes app
2. Switch to a Keyman keyboard for a right-to-left language
3. Type a letter

**Expected behavior**
The cursor on the right side of the text area and text flowing right to left.

**Keyman for iPhone/iPad:**
- Device: iPhone 7
- OS: 14.4.2
- Keyman version 14.0.271
- Notes

**Keyboard**
- Keyboard name: Balochi Phonetic
- Keyboard version: 1.3.2
- Language name: Balochi, Southern

**Additional context**
In the mail app one of my keyboards, Persian Phonetic works, but not in Notes