Prevent Content Loss: Add Warning on Exit and Auto-Draft Feature

Currently, when writing a post or comment in FluentCommunity, if the page is accidentally reloaded, the browser tab is closed, or the user mistakenly clicks on a link, all the written content is lost without any warning. This creates a very frustrating experience, especially for longer posts.

It would be extremely helpful if FluentCommunity could implement two improvements:

1. Exit Warning – Show a confirmation dialog when a user tries to leave the page (reload, close tab, or navigate away) while writing something. This will prevent accidental loss of content.
2. Auto-Draft Saving – Automatically save the content (both posts and comments) as drafts while the user is writing. This way, even if something unexpected happens, the draft can be restored, ensuring no effort goes to waste.

These features are very important for improving the user experience and ensuring that community members feel safe and confident while contributing.