wp-includes/block-template-utils.php:575Removes the theme attribute from a given template part block.
$blockarrayfunction _remove_theme_attribute_from_template_part_block( &$block ) { if ( 'core/template-part' === $block['blockName'] && isset( $block['attrs']['theme'] ) ) { unset( $block['attrs']['theme'] ); }}Introduced in 6.4.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/block-template-utils.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.