Chen

feat(editor): add idle status for embed iframe block

2

To close: [BS-2843](https://linear.app/affine-design/issue/BS-2843/iframe-embed-block-占位态) [BS-2844](https://linear.app/affine-design/issue/BS-2844/iframe-embed-block-create-modal-ui-调整) [BS-2880](https://linear.app/affine-design/issue/BS-2880/spotify-选中时圆角有问题) [BS-2881](https://linear.app/affine-design/issue/BS-2881/miro-圆角有问题-点击-see-the-board-加载之后就好了)

fix(editor): handle polynomial regular expression used on uncontrolled data issue

3

Closes: [BS-3548](https://linear.app/affine-design/issue/BS-3548/处理-footnote-reference-polynomial-regular-expression-used-on) ## Summary by CodeRabbit - **Bug Fixes** - Improved handling of footnote references following URLs, ensuring that incomplete or malformed footnote references do not alter the original text....