Remove navigation block styles

[adamziel]

Description

Solves #22327 where we concluded the navigation block styles are not useful and should be removed.

How has this been tested?

1. Go to post editor
2. Add a new navigation block
3. Confirm the background is transparent
4. Add a few links and a few nested menus
5. Confirm all the nested menus have light background
6. Update the navigation block background
7. Confirm the background was inherited by all the nested menus
8. Ditto for font color
9. Select the navigation block and confirm there are no style variations available in the block inspector
10. Make sure the change works on the website after publishing the post

Screenshots

Types of changes

Breaking change - it will affect all existing styled blocks out in the wild.

Checklist:

• My code is tested.
• My code follows the WordPress code style.
• My code follows the accessibility standards.
• My code has proper inline documentation.
• I've included developer documentation if appropriate.
• I've updated all React Native files affected by any refactorings/renamings in this PR.

[jasmussen]

This feels a solid improvement. Lots of red, and overall just a better experience front and backend, we're really getting closer:

It does remove light and dark mode. But given that those could easily be inherited by the theme itself, or even be customized using the color tools if need be, seems worth it.

👍 👍 on a design point of view, and CSS code looks good too. Happy to approve, but since it's a breaking change, I assume it will need a dev note or changelog entry or both?

[noisysocks]

Looks good! 👍

Removing the styles doesn't cause existing Navigation blocks out in the wild to no longer load. They will appear different, which is a breaking change, but since the Navigation block is experimental I think this is okay.

[github-actions]

Size Change: +5.43 kB (0%)

Total Size: 1.14 MB

Filename	Size	Change
build/annotations/index.js	3.67 kB	-8 B (0%)
build/api-fetch/index.js	3.39 kB	-8 B (0%)
build/block-editor/index.js	115 kB	+5.34 kB (4%)
build/block-editor/style-rtl.css	10.8 kB	+78 B (0%)
build/block-editor/style.css	10.8 kB	+78 B (0%)
build/block-library/editor-rtl.css	7.54 kB	-31 B (0%)
build/block-library/editor.css	7.54 kB	-33 B (0%)
build/block-library/index.js	130 kB	-47 B (0%)
build/block-library/style-rtl.css	7.75 kB	-29 B (0%)
build/block-library/style.css	7.76 kB	-25 B (0%)
build/block-serialization-default-parser/index.js	1.88 kB	-2 B (0%)
build/blocks/index.js	48.2 kB	-1 B
build/components/index.js	199 kB	-3 B (0%)
build/compose/index.js	9.56 kB	+4 B (0%)
build/core-data/index.js	11.4 kB	+8 B (0%)
build/data-controls/index.js	1.29 kB	-2 B (0%)
build/data/index.js	8.46 kB	+11 B (0%)
build/edit-navigation/index.js	9.96 kB	+28 B (0%)
build/edit-post/index.js	304 kB	+101 B (0%)
build/edit-site/index.js	16.6 kB	+17 B (0%)
build/edit-widgets/index.js	9.35 kB	+1 B
build/editor/index.js	45 kB	+3 B (0%)
build/element/index.js	4.65 kB	-2 B (0%)
build/format-library/index.js	7.71 kB	-13 B (0%)
build/hooks/index.js	2.13 kB	-1 B
build/is-shallow-equal/index.js	709 B	-1 B
build/keyboard-shortcuts/index.js	2.52 kB	-1 B
build/keycodes/index.js	1.94 kB	-2 B (0%)
build/list-reusable-blocks/index.js	3.12 kB	-1 B
build/notices/index.js	1.79 kB	-3 B (0%)
build/nux/index.js	3.4 kB	-1 B
build/primitives/index.js	1.4 kB	-6 B (0%)
build/priority-queue/index.js	789 B	+1 B
build/redux-routine/index.js	2.85 kB	-4 B (0%)
build/rich-text/index.js	13.9 kB	-3 B (0%)
build/server-side-render/index.js	2.71 kB	-2 B (0%)
build/shortcode/index.js	1.7 kB	+1 B
build/token-list/index.js	1.27 kB	-1 B
build/url/index.js	4.06 kB	-4 B (0%)
build/warning/index.js	1.13 kB	-4 B (0%)
build/wordcount/index.js	1.17 kB	-1 B

ℹ️ View Unchanged

Filename	Size	Change
build/a11y/index.js	1.14 kB	0 B
build/autop/index.js	2.82 kB	0 B
build/blob/index.js	620 B	0 B
build/block-directory/index.js	7.67 kB	0 B
build/block-directory/style-rtl.css	944 B	0 B
build/block-directory/style.css	945 B	0 B
build/block-library/theme-rtl.css	728 B	0 B
build/block-library/theme.css	729 B	0 B
build/block-serialization-spec-parser/index.js	3.1 kB	0 B
build/components/style-rtl.css	15.8 kB	0 B
build/components/style.css	15.8 kB	0 B
build/date/index.js	5.38 kB	0 B
build/deprecated/index.js	772 B	0 B
build/dom-ready/index.js	569 B	0 B
build/dom/index.js	3.23 kB	0 B
build/edit-navigation/style-rtl.css	1.02 kB	0 B
build/edit-navigation/style.css	1.02 kB	0 B
build/edit-post/style-rtl.css	5.57 kB	0 B
build/edit-post/style.css	5.57 kB	0 B
build/edit-site/style-rtl.css	3.03 kB	0 B
build/edit-site/style.css	3.03 kB	0 B
build/edit-widgets/style-rtl.css	2.45 kB	0 B
build/edit-widgets/style.css	2.45 kB	0 B
build/editor/editor-styles-rtl.css	537 B	0 B
build/editor/editor-styles.css	539 B	0 B
build/editor/style-rtl.css	3.78 kB	0 B
build/editor/style.css	3.78 kB	0 B
build/escape-html/index.js	733 B	0 B
build/format-library/style-rtl.css	547 B	0 B
build/format-library/style.css	548 B	0 B
build/html-entities/index.js	622 B	0 B
build/i18n/index.js	3.56 kB	0 B
build/list-reusable-blocks/style-rtl.css	476 B	0 B
build/list-reusable-blocks/style.css	476 B	0 B
build/media-utils/index.js	5.32 kB	0 B
build/nux/style-rtl.css	671 B	0 B
build/nux/style.css	668 B	0 B
build/plugins/index.js	2.56 kB	0 B
build/viewport/index.js	1.85 kB	0 B

_{compressed-size-action}