Summary:
Remove FocusTrackingRegion—all CommandRegions should be focusable, and nesting the two creates varying behavior based on which is the parent
Calling focus() on an injected / unsafe component should always do /something/. Try the inner React method, inner DOM method, or call on ourselves
Rename contentEditable._focusEditor to "focus" since it intends to replace default focus behavior
In ComposerView, always change focus via setState, never by calling focus() directly. Rather than tracking `_lastFocusedField`, just focus whenever the activeElement isnt within the focusedField. Make body initial focus when draft is pristine...
...(ensures new drafts are focused)
Test Plan: Run tests
Reviewers: evan, juan
Reviewed By: evan, juan
Differential Revision: https://phab.nylas.com/D2406
1d19533fd8