[10.x] Accept time when generating ULID (#46201)

* Accept time when generating ULID

* Always return Ulid object

Author: zepfietje

src/Illuminate/Support/Str.php

@@ -1375,11 +1375,16 @@ public static function createUuidsNormally()
     /**
      * Generate a ULID.
      *
+     * @param  \DateTimeInterface|null  $time
      * @return \Symfony\Component\Uid\Ulid
      */
-    public static function ulid()
+    public static function ulid($time = null)
     {
-        return new Ulid();
+        if ($time === null) {
+            return new Ulid();
+        }
+
+        return new Ulid(Ulid::generate($time));
     }
 
     /**