Remove now-redundant type coersion

Author: westonruter

src/wp-includes/embed.php

@@ -742,9 +742,9 @@ function get_oembed_response_data_rich( $data, $post, $width, $height ) {
 		$thumbnail_src = wp_get_attachment_image_src( $thumbnail_id, array( $width, 0 ) );
 
 		if ( is_array( $thumbnail_src ) ) {
-			$data['thumbnail_url']    = (string) ( $thumbnail_src[0] ?? '' );
-			$data['thumbnail_width']  = (int) ( $thumbnail_src[1] ?? 0 );
-			$data['thumbnail_height'] = (int) ( $thumbnail_src[2] ?? 0 );
+			$data['thumbnail_url']    = $thumbnail_src[0];
+			$data['thumbnail_width']  = $thumbnail_src[1];
+			$data['thumbnail_height'] = $thumbnail_src[2];
 		}
 	}