Coding Standards: Silence a WPCS warning in date_i18n().

This fixes a "Calling `current_time()` with a `$type` of `timestamp` or `U` is strongly discouraged as it will not return a Unix (UTC) timestamp" warning.

Props jrf.
See #53359.

git-svn-id: https://develop.svn.wordpress.org/trunk@51557 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/functions.php

@@ -167,6 +167,7 @@ function date_i18n( $format, $timestamp_with_offset = false, $gmt = false ) {
 
 	// If timestamp is omitted it should be current time (summed with offset, unless `$gmt` is true).
 	if ( ! is_numeric( $timestamp ) ) {
+		// phpcs:ignore WordPress.DateTime.CurrentTimeTimestamp.Requested
 		$timestamp = current_time( 'timestamp', $gmt );
 	}