* insert mentions as links styled as pills
* post merge fix and update test
* update comments, move typeguard out
* create a text node instead of setting innerText
* update test
* update test
* fix broken cypress test, remove .only
* make it able to deal with inserting in middle of blank lines
* update comment
* fix strict null error
* use typeguard
* avoid implicit truth check
* add hook tests
* add comment
* Update test/components/views/rooms/wysiwyg_composer/hooks/usePlainTextListeners-test.tsx
Co-authored-by: Andy Balaam <andy.balaam@matrix.org>
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Co-authored-by: Andy Balaam <andy.balaam@matrix.org>
