🐛(frontend) Interlinking memory leak

[AntoLC]

Purpose

When investigating about a memory leak during collaboration we found a problem with the interlinking that could cause a memory leak. When doing collaborative editing, doc?.title might be out of sync for other users when updated by another user. This can cause a useEffect to run repeatedly, causing an infinite loop of updates. We now trigger the effect only when doc?.title changes, not when the customInlineContent changes.

Proposal

• [x] ⚡️(frontend) improve unsubscribe logic when unmounting components
• [x] 🐛(frontend) fix memory leak in Interlinking
• [x] 🥅(frontend) improve error handling during upload