Override the fixed h-6.5 from Kumo's sm size with h-auto and py-1 so
the button sizes naturally around the avatar. The sm size is still used
for text size, gap, and border-radius — only the height is overridden,
since this is a usage-specific concern (tall content inside a small
button) rather than a design system issue.
Co-authored-by: Matt Kane <mkane@cloudflare.com>