Handle command completions in RTE (#10521)

* pass handleCommand prop down and use it in WysiwygAutocomplete

* allow a command to generate a query from buildQuery

* port command functionality into the sendMessage util

* tidy up comments

* remove use of shouldSend and update comments

* remove console log

* make logic more explicit and amend comment

* uncomment replyToEvent block

* update util test

* remove commented out test

* use local text over import from current composer

* expand tests

* expand tests

* handle the FocusAComposer action for the wysiwyg composer

* remove TODO comment

* remove TODO

* test for action dispatch

* fix failing tests

* tidy up tests

* fix TS error and improve typing

* fix TS error

* amend return types for sendMessage, editMessage

* fix null content TS error

* fix another null content TS error

* use as to correct final TS error

* remove undefined argument

* try to fix TS errors for editMessage function usage

* tidy up

* add TODO

* improve comments

* update comment

src/components/views/rooms/wysiwyg_composer/hooks/useWysiwygSendActionHandler.ts

@@ -46,6 +46,7 @@ export function useWysiwygSendActionHandler(
 
             switch (payload.action) {
                 case "reply_to_event":
+                case Action.FocusAComposer:
                 case Action.FocusSendMessageComposer:
                     focusComposer(composerElement, context, roomContext, timeoutId);
                     break;