Block Editor: Include the Site Logo block from the Gutenberg repository

[youknowriad]

Gutenberg 10.7 includes a Site Logo block that requires some updates to the settings endpoint to work properly. For this reason it has been left out of the package update commit.

Trac ticket: https://core.trac.wordpress.org/ticket/53247

Can we enable the site-logo block in the same patch and add the required code? (I think to do so, there's a couple PHP files/webpack config to change and run npm run build:dev)

Take the PostAuthor block as an example:

see this line ​https://github.com/WordPress/wordpress-develop/pull/1273/files#diff-c62beff71446448ff952e38805c8ae7652f4e2717d3ca41b1d9cd9963bd82464L17

and

​https://github.com/WordPress/wordpress-develop/pull/1273/files#diff-47f938308062dccd6b66f867fd9030b08c2f582b8e2e28351b999d84360d871dL116

Thank you @youknowriad :+1:
Added the block and fixed a related phpunit test.

@aristath looks like there are some failing phpunit tests here, any idea?

Fixed the failing tests

At a minimum the name for the theme mods option in the REST API should just be theme_mods. It also should be using set_theme_mod and probably get_theme_mod. But again, putting that in this endpoint is entirely incorrect. The capability is incorrect, it is using manage_options instead of edit_theme_options and conceptually is a mismatch as the theme mods API is an abstraction over the options API.

Theme mods should either be added to the themes endpoint, or more ideally have an endpoint to interact with registered settings in the customizer.

This is not suitable to be shipped in Core. If you aren't interested in making those endpoints, then I'd recommend looking at calling the customizer admin-ajax API. Ex: ​https://github.com/WordPress/gutenberg/blob/854a31f3edee98e8b16ef5f2d32abcdaa8b395b0/packages/edit-navigation/src/store/actions.js#L195

This also seems to have a different change of adding the stylesheet option to the settings endpoint. I'm not sure why this is here, but it can't ship. If you need the active theme get it from the themes endpoint. If you need to change themes, you can't just do that by updating the option. Theme switching needs to be added to the themes endpoint.

For the sake of this PR I updated @wordpress/block-library to v3.2.2, cleaned-up previous files and updated the ones relevant to the site-logo block.
Tests are currently failing, but it _should_ be OK once the block-library package gets updated in the master branch and this gets rebased.

Packages are now up to date on trunk, would you mind refreshing this PR?

The block seems to work in my testing. Any idea about the failing tests? Is it still the action unhooking thing?

looking into the failing tests now :+1:

All tests now pass. I needed to tweak the sync hook a bit, and a PR backporting these changes to Gutenberg was submitted in ​https://github.com/WordPress/gutenberg/pull/32370

Ok makes sense. I guess this means we should wait for the next package update to land this PR to avoid having npm run build override your changes.

Updated, should be OK to merge now :+1:

[youknowriad]

In 51091:

Block Editor: Add the Site Logo block's server implementation.

Props aristath, timothyblynjacobs, ocean90.
Fixes #53247.

committed in https://core.trac.wordpress.org/changeset/51091