Auto-refresh PR comments when they are visible

While there are various things in the extension that auto-refresh state from GitHub, it doesn't seem like "you are looking at a comment" is enough to auto-refresh comments.

If I am seeing an inline comment in an editor, or I have the comments pane open on the bottom, then it seems reasonable to have a configurable comment refresh interval active (even if no other parts of the extension like sidebars is visible).

I tested this by having a comment visible in an editor as well as in the comments tab (but no other parts of the extension open) and replying to the comment from a separate browser. I waited over three minutes and the comment did not show up. (Clicking the refresh button on the comments panel worked.)

まず、表示されているインラインコメントとコメントペインに対する既存の自動更新動作を追跡します。どちらか一方のビューが表示されている場合に、設定可能な更新間隔が有効なままであることを確認し、別の場所で行われた返信が手動更新ボタンを使わずに表示されることを確認します。