[justlevine]

What?

This PR fixes an issue with several apply_filters() doc-blocks in WP_Theme_JSON_Resolver_Gutenberg where the @param name was missing.

Why?

While this issue was surfaced by PHPStan (via #66693) it can be remediated independently as part of #66598.

How?

Testing Instructions

Testing Instructions for Keyboard

Screenshots or screencast

Before	After

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[westonruter]

🤖 Comment by Claude Opus 5.5

Trunk was merged in, and two commits were added:

• 65ceb9d names the parameter $theme_json rather than $instance, matching the documentation of the same four filters in core's WP_Theme_JSON_Resolver since r56157.
• 64644e5 corrects WP_Theme_JSON_Data_Gutenberg, whose container property and get_theme_json() were documented as core's WP_Theme_JSON, though the constructor always assigns a WP_Theme_JSON_Gutenberg (not a subclass). This was hidden while the filter docblocks failed to parse: once PHPStan could type the filtered value from the @param tags, the wrong return type surfaced as seven new errors in the resolver.

Together these resolve 10 errors reported at PHPStan level 5, with none introduced. Since the core counterparts are already correct, the No Core Sync Required label was added.