1. I chat with BibEntry with citationkey A.
2. I change the citation key to B
3. I reopen the AI chat
4. Chat is empty

Expectation: Chat is the same after step 1.

Idea to solve:

1. Listen to entry changed events
2. Filter on citatoin key change
3. Stop if key is changed to something "invalid"
4. get messages for oldkey
5. Store messages to newkey
6. Remove messages for oldkey