Privacy: Wrap Reflection*::setAccessible() call in conditional check.

These methods are no-ops since PHP 8.1 and deprecated since PHP 8.5.

Reference: [https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_reflectionsetaccessible PHP RFC: Deprecations for PHP 8.5: Deprecate `Reflection*::setAccessible()`].

See #63956, #44267.

git-svn-id: https://develop.svn.wordpress.org/trunk@60903 602fd350-edb4-49c9-b593-d223f7449a82

Author: swissspidy

tests/phpunit/tests/admin/wpPrivacyRequestsTable.php

@@ -222,7 +222,9 @@ public function test_get_timestamp_as_date() {
 
 		$reflection = new ReflectionClass( $table );
 		$method     = $reflection->getMethod( 'get_timestamp_as_date' );
-		$method->setAccessible( true );
+		if ( PHP_VERSION_ID < 80100 ) {
+			$method->setAccessible( true );
+		}
 
 		$date_format = __( 'Y/m/d' );
 		$time_format = __( 'g:i a' );