fix crash on emoji select

[ajbura]

Description

ReactEditor.focus(editor) was crashing the app when the requestClose was called by FocusTrap onDeactive after it is already called after emoji onClick. looks like a upstream issue slide-in by last slate update

Fixes #2248

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

[github-actions]

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[kfiven]

Need a fix in message editor also.