chore: more design change updates

[arnautov-anton]

🎯 Goal

• adjust Avatar sizing (fix 1/1 ratio)
• add border to the AvatarStack
• add "overflow" badge to the AvatarStack
• fix ReactionsList positioning above message bubble
• add "overflow" badge to the GroupAvatar component
• add "overflow" badge to the ReactionsList
• break ReactionsList (bottom variant) if it grows beyond message max-width
• add 2xl avatar variants (Avatar, GroupAvatar)

[github-actions]

Size Change: 0 B

Total Size: 395 kB

ℹ️ View Unchanged

Filename	Size
./dist/audioProcessing-BbOs2wMd.js	1.32 kB
./dist/Channel-B9FRZd2R.js	20.8 kB
./dist/ChannelPreview-Dn0nDD9T.js	6.84 kB
./dist/cjs/emojis.js	2.98 kB
./dist/cjs/experimental.js	3.62 kB
./dist/cjs/index.js	196 kB
./dist/cjs/mp3-encoder.js	1.27 kB
./dist/css/index.css	34.4 kB
./dist/css/v2/emoji-mart.css	1.84 kB
./dist/css/v2/emoji-replacement.css	300 B
./dist/css/v2/index.css	39.4 kB
./dist/css/v2/index.layout.css	22.8 kB
./dist/limits-DABobzwQ.js	62.8 kB

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