Prevent PHP fatals when directly accessing files, round 9 (#45537)

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/18653099953

Upstream-Ref: Automattic/jetpack@f377106

Author: tbradsha

src/utility-functions.php

@@ -2,6 +2,10 @@
 
 use Automattic\Jetpack\Connection\Client;
 
+if ( ! defined( 'ABSPATH' ) ) {
+	exit( 0 );
+}
+
 defined( 'VIDEOPRESS_MIN_WIDTH' ) || define( 'VIDEOPRESS_MIN_WIDTH', 60 );
 defined( 'VIDEOPRESS_DEFAULT_WIDTH' ) || define( 'VIDEOPRESS_DEFAULT_WIDTH', 640 );