Canonical: Introduce `admin_canonical_url` filter.

This changeset introduces the new `admin_canonical_url` hook to help developers and extenders to modify the admin canonical url value.

Props prionkor, audrasjb.
Fixes #59545.




Built from https://develop.svn.wordpress.org/trunk@57595


git-svn-id: http://core.svn.wordpress.org/trunk@57096 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/misc.php

@@ -1396,6 +1396,15 @@ function wp_admin_canonical_url() {
 	// Ensure we're using an absolute URL.
 	$current_url  = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
 	$filtered_url = remove_query_arg( $removable_query_args, $current_url );
+
+	/**
+	 * Filters the admin canonical url value.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $filtered_url The admin canonical url value.
+	 */
+	$filtered_url = apply_filters( 'admin_canonical_url', $filtered_url );
 	?>
 	<link id="wp-admin-canonical" rel="canonical" href="<?php echo esc_url( $filtered_url ); ?>" />
 	<script>

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.5-alpha-57594';
+$wp_version = '6.5-alpha-57595';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.