When typing in Japanese, the Enter key is used to confirm kanji conversion
during IME composition. Previously, pressing Enter would immediately save
the tag, which prevented users from completing the conversion.
Changes:
- Add isComposing check to navigable_list_controller.js Enter handler
- Add IME composition tracking to form_controller.js
- Add compositionstart/compositionend event handlers to tag, step, and
reaction input fields
- Add preventComposingSubmit action to prevent form submission during
composition
This fix supports all IME input methods (Japanese, Chinese, Korean, etc.)
using standard browser composition events.
Andy Smith