Fallback to WebP if PHP does not supported AVIF

Author: mukeshpanchal27

plugins/webp-uploads/tests/test-helper.php

@@ -372,7 +372,7 @@ public function test_it_should_return_default_transforms_when_filter_returns_non
 		} else {
 			$default_transforms = array(
 				'image/jpeg' => array( 'image/webp' ),
-				'image/webp' => array( 'image/avif' ),
+				'image/webp' => array( 'image/webp' ),
 				'image/avif' => array( 'image/avif' ),
 				'image/png'  => array( 'image/webp' ),
 			);