Media: Make `adjacent_image_link()` include alt text when returning an image.

When using the `adjacent_image_link()` function there is a condition that will return a linked image. Previously, the returned image was sent without alt attributes.

Now, `adjacent_image_link()` will include alt attributes of the image's title when an image is returned.

Props joedolson, Mista-Flo, sabernhardt.
Fixes #52387.

Built from https://develop.svn.wordpress.org/trunk@50274


git-svn-id: http://core.svn.wordpress.org/trunk@49919 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/media.php

@@ -3441,7 +3441,8 @@ function adjacent_image_link( $prev = true, $size = 'thumbnail', $text = false )
 
 		if ( isset( $attachments[ $k ] ) ) {
 			$attachment_id = $attachments[ $k ]->ID;
-			$output        = wp_get_attachment_link( $attachment_id, $size, true, false, $text );
+			$attr          = array( 'alt' => get_the_title( $attachment_id ) );
+			$output        = wp_get_attachment_link( $attachment_id, $size, true, false, $text, $attr );
 		}
 	}
 

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.7-beta1-50273';
+$wp_version = '5.7-beta1-50274';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.