How do I customize a Gravity Forms upload file error message such as "There was an problem while verifying your file." - gravity-forms-plugin

Question

My goal is to customize the error message that may occur immediately after attempting to upload a file to a Gravity Forms "File Upload" filed. In particular I would like to modify the error message that occurs when you upload a file with the wrong file extension such as uploading a PNG file with a file name that ends with '.jpg' instead of '.png'.
The following represents what I'm trying to do, but it obviously doesn't work since the AJAX error message is displayed right after the file upload has completed and before Gravity Form has even been submitted or validated.
/////////////////////////////
// CUSTOM GRAVITY FORM FILTERS
//
add_filter( 'gform_field_validation',
/**
* Fixes Gravity Forms Custom validation message.
*
* #link https://docs.gravityforms.com/gform_field_validation/
*
* #param array $result The result array.
* #param string $value The value of the field.
* #param array $form The Gravity Form array.
* #param object $field The form field object.
*
* #return array The result array.
*/
function( $result, $value, $form, $field ) {
GFCommon::log_debug( __METHOD__ . '(): Running custom gform_field_validation...' );
if ( $field->type == 'file') {
if (!$result['is_valid'] && str_contains($result['message'], 'There was an problem while verifying your file.')) {
$result['message'] = str_replace(
'was an problem',
'was a problem',
$result['message'] // e.g., "Photo.jpg - There was an problem while verifying your file."
)
. ' Please make sure that your file extension (e.g., \'.jpg\') is correct. '
.'For example a PNG file should be saved with a \'.png\' extension and not with a \'.jpg\' file extension.';
}
}
return $result;
}
, 10, 4
);