FIX: Replace watched words with wildcards (#24279)

These have been broken since fd07c943ad
because watched words were not correctly transformed to regexps.
This partially reverts the changes.

app/assets/javascripts/discourse-common/addon/utils/watched-words.js

@@ -5,5 +5,5 @@ export function createWatchedWordRegExp(word) {
 
 export function toWatchedWord(regexp) {
   const [[regexpString, options]] = Object.entries(regexp);
-  return { regexp: regexpString, ...options };
+  return { ...options, regexp: regexpString };
 }