fix: 4208 - Empty title with special characters

[louis-jan]

Describe Your Changes

• This PR addressed an issue where thread title generation removed special characters that should also prevent multilingual support for that. Now it will remove only non-letter Unicode characters.

Fixes Issues

• bug: [0.5.10 & olders] Empty title when using special characters #4208

Changes made

The code change in ModelHandler.tsx updates the cleanedMessageContent processing logic and adds validation. Specifically:

1. The regular expression used in replace() is modified to:

   • Before: [^a-z0-9\s], which removes non-alphanumeric ASCII characters.
   • After: [^\p{L}\s]+, which removes non-letter Unicode characters using the Unicode property escapes.

2. A new validation step is introduced:

   • It checks if cleanedMessageContent is empty after trimming. If it is, the function exits early to avoid processing or persisting an empty message.

[github-actions]

Barecheck - Code coverage report

Total: 69.29%

Your code coverage diff: 0.00% ▴

✅ All code changes are covered