[Glitch] Rewrite <AutosuggestHashtag /> as FC and TS

Port 804488d38e to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/components/autosuggest_input.jsx

@@ -8,9 +8,7 @@ import ImmutablePureComponent from 'react-immutable-pure-component';
 import AutosuggestAccountContainer from 'flavours/glitch/features/compose/containers/autosuggest_account_container';
 
 import AutosuggestEmoji from './autosuggest_emoji';
-import AutosuggestHashtag from './autosuggest_hashtag';
-
-
+import { AutosuggestHashtag } from './autosuggest_hashtag';
 
 const textAtCursorMatchesToken = (str, caretPosition, searchTokens) => {
   let word;