Add tag name main in query in search template (#7350)

blockbase/templates/search.html

@@ -10,7 +10,7 @@
 </div>
 <!-- /wp:group -->
 
-<!-- wp:query {"layout":{"inherit":true}} -->
+<!-- wp:query {"tagName":"main","layout":{"inherit":true}} -->
 <main class="wp-block-query">
 	<!-- wp:post-template -->
 	<!-- wp:group -->