Themes: Use `add_action` for `pre_get_posts` hook in `_add_template_loader_filters()`.

Although `add_action` and `add_filter` are internally the same, `pre_get_posts` is an action hook.  This change updates the hook type to match what developers would expect when evaluating the code.

Follow-up to [52316].

Props swissspidy, riccardodicurti.
Fixes #57097.
Built from https://develop.svn.wordpress.org/trunk@55335


git-svn-id: http://core.svn.wordpress.org/trunk@54868 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/block-template.php

@@ -27,7 +27,7 @@ function _add_template_loader_filters() {
 
 	// Request to resolve a template.
 	if ( isset( $_GET['_wp-find-template'] ) ) {
-		add_filter( 'pre_get_posts', '_resolve_template_for_new_post' );
+		add_action( 'pre_get_posts', '_resolve_template_for_new_post' );
 	}
 }
 

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2-beta1-55334';
+$wp_version = '6.2-beta1-55335';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.