Fix issue and commit status popup padding (#25254)

Close #25249

Use "dialog" for the role



![image](https://github.com/go-gitea/gitea/assets/2114189/2b5b7552-48bc-4ecf-947b-34917232cff9)

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Co-authored-by: silverwind <me@silverwind.io>

web_src/js/features/repo-commit.js

@@ -65,6 +65,7 @@ export function initCommitStatuses() {
       content: this.nextElementSibling,
       placement: top ? 'top-start' : 'bottom-start',
       interactive: true,
+      role: 'dialog',
     });
   });
 }