Merge branch '5.3' into 5.4

* 5.3:
  Fix tests
  [VarExporter] escape unicode chars involved in directionality
  [Intl] Update the ICU data to 70.1
  Fix typos
  Update validators.ca.xlf
  Add missing Validator translations for Estonian
  Fix `Request::getUserInfo()` return type
  [VarDumper] Make dumping DateInterval instances timezone-independent
  Add missing validators translation in Brazillian Portuguese
  I heard you like some Finnish translations #43432
  fix typo and improve TH translation
  Added missing translations for Thai (th)
  [Messenger] Use `TransportMessageIdStamp` in `InMemoryTransport` allows retrying

Caster/DateCaster.php

@@ -49,7 +49,7 @@ public static function castDateTime(\DateTimeInterface $d, array $a, Stub $stub,
 
     public static function castInterval(\DateInterval $interval, array $a, Stub $stub, bool $isNested, int $filter)
     {
-        $now = new \DateTimeImmutable();
+        $now = new \DateTimeImmutable('@0', new \DateTimeZone('UTC'));
         $numberOfSeconds = $now->add($interval)->getTimestamp() - $now->getTimestamp();
         $title = number_format($numberOfSeconds, 0, '.', ' ').'s';
 
@@ -63,7 +63,8 @@ private static function formatInterval(\DateInterval $i): string
         $format = '%R ';
 
         if (0 === $i->y && 0 === $i->m && ($i->h >= 24 || $i->i >= 60 || $i->s >= 60)) {
-            $i = date_diff($d = new \DateTime(), date_add(clone $d, $i)); // recalculate carry over points
+            $d = new \DateTimeImmutable('@0', new \DateTimeZone('UTC'));
+            $i = $d->diff($d->add($i)); // recalculate carry over points
             $format .= 0 < $i->days ? '%ad ' : '';
         } else {
             $format .= ($i->y ? '%yy ' : '').($i->m ? '%mm ' : '').($i->d ? '%dd ' : '');