Bernhard Reiter 172397e6e5 Themes: Inject theme attribute during serialization. ...

Rather than using `_inject_theme_attribute_in_block_template_content` to inject the `theme` attribute into all Template Part blocks found in a given file-based Block Template, introduce a new function called `_inject_theme_attribute_in_template_part_block`, and use that as second argument to `serialize_blocks()` (introduced in [56557]) in order to inject said attribute during tree traversal for serialization.

This allows for a more modular approach that will eventually be extended to implement automatic insertion of hooked blocks.

Note that we're guarding `_build_block_template_result_from_file()` (i.e. the callsite of `_inject_theme_attribute_in_template_part_block` and previously of `_inject_theme_attribute_in_block_template_content`) against regressions through additional unit test coverage added in [56562].

Props @gziolo.
Fixes #59338. See #59313.
Built from https://develop.svn.wordpress.org/trunk@56578


git-svn-id: http://core.svn.wordpress.org/trunk@56090 1a063a9b-81f0-0310-95a4-ce76da25c4cd

2023-09-14 08:52:19 +00:00

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