Bug Description

As we have provided filter webp_uploads_upload_image_mime_transforms for the mime type transforms in any case user does not want to transform the mime type then they just return empty, true/false or array() then this file helper.php code is not require because $transforms = (array) apply_filters( 'webp_uploads_upload_image_mime_transforms', $default_transforms ); filter always retunt array value.

Return type empty

add_filter('webp_uploads_upload_image_mime_transforms', function () {
	return;
});

Return type true/false

add_filter('webp_uploads_upload_image_mime_transforms', function () {
	return false;
});

Return type empty array:

add_filter('webp_uploads_upload_image_mime_transforms', function () {
	return array();
});

Also, we have to check if an array is null and then return an empty array so it can't execute next foreach code.

Additional Context

• PHP Version: 8.0.15
• OS: Windows
• Browser: Chrome
• Plugin Version: 1.1.0