Fix clipped descenders in the group-call participant name

[anriltine]

Summary

• The group-call participant card (CoverItem / PeerShortInfoCover) clips descenders in the name. Letters such as g and y in a name like "Ignatyev" are cut off along the bottom.
• Cause: shortInfoCover (inherited by groupCallMenuCover) uses a 15px semibold FlatLabel with maxHeight: 19px. FlatLabel sizes itself to min(textHeight, maxHeight), so 19px is below the font line height and the widget clips the glyphs.
• Fix: raise the name maxHeight to 24px, matching the profile cover name cap (infoProfileCover already uses 24px for a similar semibold name). This is a ceiling, not a fixed height, so a single line still sizes to the font metrics and does not overlap the status line.

Fixes #31264

Test plan

• Join a voice/group call on Windows.
• Right-click a participant whose name contains descenders (g, y, p, j, q).
• Confirm the name in the popup card is fully visible, including the loop of g.
• Confirm a long name still elides on one line instead of wrapping over the status.
• Confirm the same cover used by the short-info box (peer card outside calls) is also unclipped.

Made with Cursor

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