Merge branch '6.3' into 6.4

* 6.3:
  minor #53524 [Messenger] [AmazonSqs] Allow `async-aws/sqs` version 2 (smoench)
  Fix bad merge
  List CS fix in .git-blame-ignore-revs
  Fix implicitly-required parameters
  List CS fix in .git-blame-ignore-revs
  Apply php-cs-fixer fix --rules nullable_type_declaration_for_default_null_value

Author: nicolas-grekas

DatePoint.php

@@ -21,7 +21,7 @@ final class DatePoint extends \DateTimeImmutable
     /**
      * @throws \DateMalformedStringException When $datetime is invalid
      */
-    public function __construct(string $datetime = 'now', \DateTimeZone $timezone = null, parent $reference = null)
+    public function __construct(string $datetime = 'now', ?\DateTimeZone $timezone = null, ?parent $reference = null)
     {
         $now = $reference ?? Clock::get()->now();
 
@@ -61,7 +61,7 @@ public function __construct(string $datetime = 'now', \DateTimeZone $timezone =
     /**
      * @throws \DateMalformedStringException When $format or $datetime are invalid
      */
-    public static function createFromFormat(string $format, string $datetime, \DateTimeZone $timezone = null): static
+    public static function createFromFormat(string $format, string $datetime, ?\DateTimeZone $timezone = null): static
     {
         return parent::createFromFormat($format, $datetime, $timezone) ?: throw new \DateMalformedStringException(static::getLastErrors()['errors'][0] ?? 'Invalid date string or format.');
     }

MockClock.php

@@ -26,7 +26,7 @@ final class MockClock implements ClockInterface
      * @throws \DateMalformedStringException When $now is invalid
      * @throws \DateInvalidTimeZoneException When $timezone is invalid
      */
-    public function __construct(\DateTimeImmutable|string $now = 'now', \DateTimeZone|string $timezone = null)
+    public function __construct(\DateTimeImmutable|string $now = 'now', \DateTimeZone|string|null $timezone = null)
     {
         if (\PHP_VERSION_ID >= 80300 && \is_string($timezone)) {
             $timezone = new \DateTimeZone($timezone);

MonotonicClock.php

@@ -25,7 +25,7 @@ final class MonotonicClock implements ClockInterface
     /**
      * @throws \DateInvalidTimeZoneException When $timezone is invalid
      */
-    public function __construct(\DateTimeZone|string $timezone = null)
+    public function __construct(\DateTimeZone|string|null $timezone = null)
     {
         if (false === $offset = hrtime()) {
             throw new \RuntimeException('hrtime() returned false: the runtime environment does not provide access to a monotonic timer.');

NativeClock.php

@@ -23,7 +23,7 @@ final class NativeClock implements ClockInterface
     /**
      * @throws \DateInvalidTimeZoneException When $timezone is invalid
      */
-    public function __construct(\DateTimeZone|string $timezone = null)
+    public function __construct(\DateTimeZone|string|null $timezone = null)
     {
         $this->timezone = \is_string($timezone ??= date_default_timezone_get()) ? $this->withTimeZone($timezone)->timezone : $timezone;
     }