REST API: Pass correct number of arguments to the comment_text filter.

This ensures that `WP_REST_Comments_Controller::prepare_item_for_response()` passes three arguments to the `comment_text` filter, for consistency with all the other instances in core.

Follow-up to [15957], [16357], [25555], [38832], [40664].

Props sjregan, SergeyBiryukov.
Fixes #58238.

git-svn-id: https://develop.svn.wordpress.org/trunk@57176 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php

@@ -1091,7 +1091,7 @@ public function prepare_item_for_response( $item, $request ) {
 		if ( in_array( 'content', $fields, true ) ) {
 			$data['content'] = array(
 				/** This filter is documented in wp-includes/comment-template.php */
-				'rendered' => apply_filters( 'comment_text', $comment->comment_content, $comment ),
+				'rendered' => apply_filters( 'comment_text', $comment->comment_content, $comment, array() ),
 				'raw'      => $comment->comment_content,
 			);
 		}

tests/phpunit/tests/rest-api/rest-comments-controller.php

@@ -966,6 +966,21 @@ public function test_prepare_item_limit_fields() {
 		);
 	}
 
+	/**
+	 * @ticket 58238
+	 */
+	public function test_prepare_item_comment_text_filter() {
+		$filter = new MockAction();
+		add_filter( 'comment_text', array( $filter, 'filter' ), 10, 3 );
+
+		$request = new WP_REST_Request( 'GET', sprintf( '/wp/v2/comments/%d', self::$approved_id ) );
+
+		$response = rest_get_server()->dispatch( $request );
+
+		$this->assertSame( 1, $filter->get_call_count() );
+		$this->assertCount( 3, $filter->get_args()[0] );
+	}
+
 	public function test_get_comment_author_avatar_urls() {
 		$request = new WP_REST_Request( 'GET', sprintf( '/wp/v2/comments/%d', self::$approved_id ) );