Fixes [BS-2753](https://linear.app/affine-design/issue/BS-2753/)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Added snapping support when resizing elements, improving alignment and precision during resize operations.
- Introduced new resize event handlers allowing extensions to customize resize behavior with start, move, and end callbacks.
- **Bug Fixes**
- Improved handling of snapping state to prevent errors during drag and resize actions.
- **Tests**
- Updated resizing tests to ensure consistent snapping behavior by removing default elements that could interfere with test results.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
