* fix(macOS): enable undo/redo in webchat composer text input
Set `allowsUndo = true` on ChatComposerNSTextView in makeNSView().
NSTextView defaults allowsUndo to false, which prevented Cmd+Z and
the Edit menu Undo/Redo items from functioning.
Fixes#34898
* fix(macos): enable webchat composer undo/redo (#34962) (thanks @tylerbittner)
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Co-authored-by: Nimrod Gutman <nimrod.gutman@gmail.com>
