Close [BS-3400](https://linear.app/affine-design/issue/BS-3400/ui-issues)
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- The "View in Page" button has been renamed to "Open in Page" and now uses a new icon for improved clarity.
- The menu for embedded synced documents is now integrated directly into the Open button for a more streamlined interface.
- **Style**
- Improved spacing and visual alignment in edgeless block headers, including dedicated styling for title icons and buttons.
- Updated toolbar icon for better visual consistency.
- Added background styling for embedded linked document blocks.
- **Localization**
- Updated translation keys and text to reflect the "Open in Page" terminology across all supported languages.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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