SVG support for Session Replay Flutter SDK

**Description:**
Session Replay Flutter SDK (alpha) doesn't capture SVG images rendered
via flutter_svg. Getting "Unsupported DRAW operation: DrawPictureOperation"
warnings.

**Expected behavior:** SVG images should be captured in session replays

**Current behavior:** SVG images appear as blank spaces in replays

**Logs:**
```
[SR] [LOG] Drawing comment: Unsupported DRAW operation: DrawPictureOperation
```

**Impact:** High - Most modern Flutter apps use SVG for icons and logos