feat: add new styles for unsupported attachments (preview, message, channel preview)

[MartinCupela]

🎯 Goal

New styling of unsupported attachments
Rule that sender is not shown in DM channel preview if the last message author is the other user (comes from the design spec)

Todo:
message bubble width rules so:

• Text-only bubbles render at 400px (or full width on smaller screens) and wrap text inside that width.
• Any bubble with attachments also uses 400px (or full width on smaller screens), regardless of text length.

🛠 Implementation details

Provide a description of the implementation

🎨 UI Changes

tbd

[github-actions]

Size Change: +1.45 kB (+0.24%)

Total Size: 617 kB

📦 View Changed

Filename	Size	Change
dist/cjs/index.js	237 kB	+210 B (+0.09%)
dist/cjs/WithAudioPlayback.js	44.1 kB	+405 B (+0.93%)
dist/css/index.css	45.6 kB	+250 B (+0.55%)
dist/es/emojis.mjs	2.47 kB	-2 B (-0.08%)
dist/es/index.mjs	235 kB	+177 B (+0.08%)
dist/es/WithAudioPlayback.mjs	43.9 kB	+406 B (+0.93%)

ℹ️ View Unchanged

Filename	Size
dist/cjs/audioProcessing.js	1.32 kB
dist/cjs/emojis.js	2.96 kB
dist/cjs/mp3-encoder.js	1.27 kB
dist/css/emoji-replacement.css	456 B
dist/es/audioProcessing.mjs	1.31 kB
dist/es/mp3-encoder.mjs	756 B

_{compressed-size-action}