Block editor: remove reusable blocks stylesheet from iframe #66285
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What?
Similar to #33496.
These styles are not needed within the canvas of the editor.
Why?
There's only a single rule that is related to a modal: https://github.com/WordPress/gutenberg/blob/da4ea0d4afcbee49a6963dfcbf00d237064751cf/packages/reusable-blocks/src/components/reusable-blocks-menu-items/style.scss
How?
Remove it.
Testing Instructions
Try the "create pattern" menu item for a block. The z-index seems to be there so that the popover of the block toolbar appears under the modal.
Testing Instructions for Keyboard
Screenshots or screencast