chore: upgrade eslint plugins, remove eslint-plugin-github (#38046)

- Bump `eslint`, `typescript-eslint` and `eslint-plugin-unicorn` (to
v68), and configure the rules added in unicorn v66/v67/v68.
- Remove `eslint-plugin-github` and its workarounds (rules, type stub,
pnpm peer override, in-code `eslint-disable` comments); the rules worth
keeping are covered by `unicorn` equivalents.
- Apply the resulting fixes and autofixes across the JS codebase.

_Prepared with Claude (Opus 4.8)._

---------

Signed-off-by: wxiaoguang <wxiaoguang@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

web_src/js/features/repo-diff.ts

@@ -129,7 +129,7 @@ function initRepoDiffConversationNav() {
     const navIndex = isPrevious ? previousIndex : nextIndex;
     const elNavConversation = elAllConversations[navIndex];
     const anchor = elNavConversation.querySelector('.comment')!.id;
-    window.location.href = `#${anchor}`;
+    window.location.assign(`#${anchor}`);
   });
 }
 
@@ -245,7 +245,7 @@ async function onLocationHashChange() {
     const issueCommentPrefix = '#issuecomment-';
     if (currentHash.startsWith(issueCommentPrefix)) {
       const commentId = currentHash.substring(issueCommentPrefix.length);
-      const expandButton = document.querySelector<HTMLElement>(`.code-expander-button[data-hidden-comment-ids*=",${commentId},"]`);
+      const expandButton = document.querySelector<HTMLElement>(`.code-expander-button[data-hidden-comment-ids*=",${CSS.escape(commentId)},"]`);
       if (expandButton) {
         // avoid infinite loop, do not re-click the button if already clicked
         const attrAutoLoadClicked = 'data-auto-load-clicked';