Media: Avoid warning for undefined 'file' key with image meta array in wp_image_add_srcset_and_sizes().

Follow-up to [35412].

Props debarghyabanerjee, sabernhardt, shanemac10, leedxw, MadtownLems, enravo, djsuperfive, westonruter.
See #34430.
Fixes #60480.

Built from https://develop.svn.wordpress.org/trunk@61501


git-svn-id: http://core.svn.wordpress.org/trunk@60812 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/media.php

@@ -1785,7 +1785,7 @@ function wp_image_add_srcset_and_sizes( $image, $image_meta, $attachment_id ) {
 	}
 
 	// Bail early if an image has been inserted and later edited.
-	if ( preg_match( '/-e[0-9]{13}/', $image_meta['file'], $img_edit_hash )
+	if ( isset( $image_meta['file'] ) && preg_match( '/-e[0-9]{13}/', $image_meta['file'], $img_edit_hash )
 		&& ! str_contains( wp_basename( $image_src ), $img_edit_hash[0] )
 	) {
 		return $image;

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '7.0-alpha-61500';
+$wp_version = '7.0-alpha-61501';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.