fix: audio waveform clipping in horizontal card view (#14789)

Fixes #13399

### Issue
When viewing an audio attachment card in horizontal view, the waveform 
was being clipped and not fully visible. In vertical view it displayed 
correctly.

### Fix
- `audio-waveform` and `progressContainer` flex children were missing 
  `minWidth: 0` and `flex: 1`, causing container overflow
- `.affine-attachment-container` had a fixed height with `overflow:
hidden`
  that cut off the waveform row

### Screenshot Verification
**Before**
<img width="1661" height="935" alt="image"
src="https://github.com/user-attachments/assets/b2f0908b-94fe-4869-bdfb-cc6a757e703d"
/>

**After**
<img width="750" height="182" alt="image"
src="https://github.com/user-attachments/assets/63caac69-f37b-4894-80de-806b691581c8"
/>


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

**New Features**
- Introduced audio embed card functionality allowing users to embed and
display audio content directly in documents with standardized dimensions
and improved responsive layout styling for better visual presentation
and integration.

**Improvements**
- Enhanced styling and layout handling for audio player components to
ensure proper display and optimal rendering in various container sizes
and space constraints.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/component/src/ui/audio-player/audio-player.css.ts

@@ -123,6 +123,7 @@ export const progressContainer = style({
   display: 'flex',
   alignItems: 'center',
   gap: 8,
+  minWidth: 0,
 });
 
 export const progressBar = style({

packages/frontend/component/src/ui/audio-player/audio-waveform.css.ts

@@ -9,4 +9,6 @@ export const root = style({
   position: 'relative',
   overflow: 'hidden',
   maxWidth: 2000, // since we have at least 1000 samples, the max width is 2000
+  minWidth: 0,
+  flex: 1,
 });