Twenty Twenty-Three: Wraps navigation block in row within header template part.

This allows inserting of own blocks into header since the release of the Block Hooks API, specifically after the navigation block.

Props tomjcafferkey, poena, shailu25.
Fixes #60723.

Built from https://develop.svn.wordpress.org/trunk@58034


git-svn-id: http://core.svn.wordpress.org/trunk@57500 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentytwentythree/parts/header.html

@@ -3,7 +3,11 @@
 	<!-- wp:group {"align":"wide","style":{"spacing":{"padding":{"bottom":"var:preset|spacing|40"}}},"layout":{"type":"flex","justifyContent":"space-between"}} -->
 	<div class="wp-block-group alignwide" style="padding-bottom:var(--wp--preset--spacing--40)">
 		<!-- wp:site-title {"level":0} /-->
-		<!-- wp:navigation {"layout":{"type":"flex","setCascadingProperties":true,"justifyContent":"right"}} /-->
+		<!-- wp:group {"layout":{"type":"flex","flexWrap":"wrap","justifyContent":"left"}} -->
+		<div class="wp-block-group">
+			<!-- wp:navigation {"layout":{"type":"flex","setCascadingProperties":true,"justifyContent":"right"}} /-->
+		</div>
+		<!-- /wp:group -->
 	</div>
 	<!-- /wp:group -->
 </div>

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-58033';
+$wp_version = '6.6-alpha-58034';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.