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.)

Comienza rastreando el comportamiento existente de actualización automática para los comentarios inline visibles y el panel de comentarios. Verifica que el intervalo de actualización configurable siga activo cuando cualquiera de las dos vistas esté visible y confirma que una respuesta publicada en otro lugar aparezca sin usar el botón de actualización manual.