<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Added enhanced privacy controls by including the `credentialless` attribute to embedded content iframes for PDF, Figma, Loom, YouTube, and generic iframe blocks. This helps improve security and privacy when displaying embedded content.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
### What Changes
- Refactors the `notify` function call with undo button. It is called `notifyWithUndo`, which can associate the visibility of the `NotificationCard` with the top undo item in history stack, such as undo by shortcut `Cmd+Z`.
- change icon of the "Insert into page" button. Close [BS-3267](https://linear.app/affine-design/issue/BS-3267/frame和group的insert-into-page图标也更换一下)