Docs: Update docblock for `wp_get_attachment_image()` attributes.

This updates the docblock attributes for `wp_get_attachment_image()` to account for attribute values that are being determined by `wp_get_loading_optimization_attributes()`. Updates docs for `$attr['loading']` and adds docs for `$attr['fetchpriority']`.

Props joemcgill, dmsnell.
Fixes #59550.

Built from https://develop.svn.wordpress.org/trunk@58110


git-svn-id: http://core.svn.wordpress.org/trunk@57575 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/media.php

@@ -1048,10 +1048,12 @@ function wp_get_attachment_image_src( $attachment_id, $size = 'thumbnail', $icon
  *     @type string       $sizes         The 'sizes' attribute value.
  *     @type string|false $loading       The 'loading' attribute value. Passing a value of false
  *                                       will result in the attribute being omitted for the image.
- *                                  Defaults to 'lazy', depending on wp_lazy_loading_enabled().
+ *                                       Default determined by {@see wp_get_loading_optimization_attributes()}.
  *     @type string       $decoding      The 'decoding' attribute value. Possible values are
  *                                       'async' (default), 'sync', or 'auto'. Passing false or an empty
  *                                       string will result in the attribute being omitted.
+ *     @type string       $fetchpriority The 'fetchpriority' attribute value, whether `high`, `low`, or `auto`.
+ *                                       Default determined by {@see wp_get_loading_optimization_attributes()}.
  * }
  * @return string HTML img element or empty string on failure.
  */

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-58109';
+$wp_version = '6.6-alpha-58110';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.