Interactivity API: Allow server derived state to appear in non-final position

In some cases, derived state returns an associative array. Directives may wish to continue to access properties of the associative array, when using the syntax `state.arrayReturnedByClosure.property`. This patch continues evaluating the path after the associative array has been returned by the Closure.

Props jonsurrell, luisherranz.

Fixes #61741.
Built from https://develop.svn.wordpress.org/trunk@58825


git-svn-id: http://core.svn.wordpress.org/trunk@58221 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/interactivity-api/class-wp-interactivity-api.php

@@ -494,6 +494,7 @@ final class WP_Interactivity_API {
 	 * @since 6.5.0
 	 * @since 6.6.0 The function now adds a warning when the namespace is null, falsy, or the directive value is empty.
 	 * @since 6.6.0 Removed `default_namespace` and `context` arguments.
+	 * @since 6.6.0 Add support for derived state.
 	 *
 	 * @param string|true $directive_value The directive attribute value string or `true` when it's a boolean attribute.
 	 * @return mixed|null The result of the evaluation. Null if the reference path doesn't exist or the namespace is falsy.
@@ -530,7 +531,6 @@ final class WP_Interactivity_API {
 			} else {
 				return null;
 			}
-		}
 
 			if ( $current instanceof Closure ) {
 				/*
@@ -558,6 +558,7 @@ final class WP_Interactivity_API {
 					array_pop( $this->namespace_stack );
 				}
 			}
+		}
 
 		// Returns the opposite if it contains a negation operator (!).
 		return $should_negate_value ? ! $current : $current;

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.7-alpha-58824';
+$wp_version = '6.7-alpha-58825';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.