Cleaner invite mark in the chat message

Shipped

5 ஆகஸ்ட், 2026 அன்று 1:46 AM UTC

Author

kamo

Commit

502832f

The chat invite led with the video-camera emoji, which the message renderer scales to 1.4em — so it landed as an oversized colour sticker rather than an icon. Replace it with U+25B8, a text-presentation glyph that stays inline at text size in the bubble's own colour, and swap the scheduled line's calendar emoji for a plain "When:" label matching the email invite body.