Decouple hooked blocks insertion from setting the `metadata.ignoredHookedBlocks` attribute on anchor blocks, and perform the latter step upon saving a template or template part to the database. This ensures that anchor blocks that have been newly added to a template (or part) on the client side will also get `ignoredHookedBlocks` metadata set correctly, thus preserving editor/front-end parity. Hooked block insertion, on the other hand, will continue to happen upon ''reading'' a template (or part).
Props gziolo, tomjcafferkey.
Fixes#60506.
git-svn-id: https://develop.svn.wordpress.org/trunk@57627 602fd350-edb4-49c9-b593-d223f7449a82
Add a new `hooked_block_{$block_type}` filter that allows modifying a hooked block (in parsed block format) prior to insertion, while providing read access to its anchor block (in the same format).
This allows block authors to e.g. set a hooked block's attributes, or its inner blocks; the filter can peruse information about the anchor block when doing so. As such, this filter provides a solution to both #59572 and #60126.
The new filter is designed to strike a good balance and separation of concerns with regard to the existing [https://developer.wordpress.org/reference/hooks/hooked_block_types/ `hooked_block_types` filter], which allows addition or removal of a block to the list of hooked blocks for a given anchor block -- all of which are identified only by their block ''types''. This new filter, on the other hand, only applies to ''one'' hooked block at a time, and allows modifying the entire (parsed) hooked block; it also gives (read) access to the parsed anchor block.
Props gziolo, tomjcafferkey, andrewserong, isabel_brison, timbroddin, yansern.
Fixes#59572, #60126.
git-svn-id: https://develop.svn.wordpress.org/trunk@57354 602fd350-edb4-49c9-b593-d223f7449a82
