Improve compact messages behavior

[Irgendwer01]

(Sorry that I push this just now 💀)
This PR improves the compact messages behavior by ONLY removing the last message in the chat and tell how often it was repeated, furthermore show information when hovering over the number.

[what-the-diff]

PR Summary

• Enhanced Chat Message Compaction
  The process of aggregating repeated chat messages has been improved in this update for increasing the overall efficiency of the chat feature. Now, it's not just more efficient, but also more interactive allowing users to hover over the repeated message count for more detailed feedback.

• Cleaner Code Comparisons
  Code has been made neater by exchanging string manipulations with direct conditional checks. This makes the code easier to read and maintain.

• Updated Language Support
  Added translation support for showing the number of times a message has been repeated in chat - this feature is now available in both German and English.