Add emoji suggestions to CW and poll option fields (#10555)

* Refactor selectComposeSuggestion so that different paths can be updated

* Add suggestions in CW field

* Add emoji suggestion to poll options

* Attempt to fix CSS

* Hide suggestions by default

They will be enabled if the input has focus

app/javascript/mastodon/actions/compose.js

@@ -383,7 +383,7 @@ export function readyComposeSuggestionsAccounts(token, accounts) {
   };
 };
 
-export function selectComposeSuggestion(position, token, suggestion) {
+export function selectComposeSuggestion(position, token, suggestion, path) {
   return (dispatch, getState) => {
     let completion, startPosition;
 
@@ -405,6 +405,7 @@ export function selectComposeSuggestion(position, token, suggestion) {
       position: startPosition,
       token,
       completion,
+      path,
     });
   };
 };