FIX: add tabindex=-1 on tabLoc post links

FIX: add tabindex=-1 on tabLoc post links

This prevents tabbing from confusing screenreaders, as having default tabindex with aria-hidden confuses screenreaders

diff --git a/app/assets/javascripts/discourse/app/widgets/post.js b/app/assets/javascripts/discourse/app/widgets/post.js
index d2f7933..b1a04cc 100644
--- a/app/assets/javascripts/discourse/app/widgets/post.js
+++ b/app/assets/javascripts/discourse/app/widgets/post.js
@@ -556,7 +556,9 @@ createWidget("post-article", {
 
   html(attrs, state) {
     const rows = [
-      h("a.tabLoc", { attributes: { href: "", "aria-hidden": true } })
+      h("a.tabLoc", {
+        attributes: { href: "", "aria-hidden": true, tabindex: -1 }
+      })
     ];
     if (state.repliesAbove.length) {
       const replies = state.repliesAbove.map(p => {

GitHub sha: e744b9ef