Rewrite and restyle reaction selector and enable no-sizzle eslint rule (#30453)

Enable `no-sizzle` lint rule, there was only one use in `initCompReactionSelector` and:

- Remove all jQuery except the necessary fomantic dropdown init
- Remove the recursion, instead bind event listeners to common parent container nodes

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Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: Giteabot <teabot@gitea.io>

web_src/js/features/repo-legacy.js

@@ -393,7 +393,7 @@ export function initRepository() {
     initRepoIssueDependencyDelete();
     initRepoIssueCodeCommentCancel();
     initRepoPullRequestUpdate();
-    initCompReactionSelector($(document));
+    initCompReactionSelector();
 
     initRepoPullRequestMergeForm();
     initRepoPullRequestCommitStatus();