🖌️ fix: ordered lists markers

[danny-avila]

Summary

Originally #4546

Removed ::marker pseudo-element css content definitions to let browser generate appropriates list item markers. Also gave a little more room for markers to show because of Webkit slightly different text positioning.

Closes #4120, #4472.

Change Type

• [x] Bug fix (non-breaking change which fixes an issue)

Testing

Open LibreChat in Safari and prompt any model to return an ordered list with more than 9 items. Check that markers with 2 or more digits are shown correctly.

Checklist

• [x] My code adheres to this project's style guidelines
• [x] I have performed a self-review of my own code
• [x] My changes do not introduce new warnings
• [x] Local unit tests pass with my changes