Fix PHP 8.5 deprecation - Reflection*::setAccessible()

[andypost]

ref https://wiki.php.net/rfc/deprecations_php_8_5#extreflection_deprecations

related to drush-ops/drush#6349

Overview

This pull request:

Q	A
Bug fix?	yes
New feature?	no
Has tests?	yes
BC breaks?	no
Deprecations?	yes

Summary

Short overview of what changed.

Description

Any additional information.

[andypost]

running tests on PHP 8.5

...PHP Deprecated:  Constant E_STRICT is deprecated since 8.4, the error level was removed in /mnt/vendor/phpunit/phpunit/src/Util/ErrorHandler.php on line 99
PHP Deprecated:  Grasmash\Expander\Expander::doExpandArrayProperties(): Implicitly marking parameter $reference_data as nullable is deprecated, the explicit nullable type must be used instead in /mnt/vendor/grasmash/expander/src/Expander.php on line 106
PHP Deprecated:  Constant E_STRICT is deprecated since 8.4, the error level was removed in /mnt/vendor/phpunit/phpunit/src/Util/ErrorHandler.php on line 99
PHP Deprecated:  Grasmash\Expander\Expander::expandStringPropertiesCallback(): Implicitly marking parameter $reference_data as nullable is deprecated, the explicit nullable type must be used instead in /mnt/vendor/grasmash/expander/src/Expander.php on line 204
PHP Deprecated:  Constant E_STRICT is deprecated since 8.4, the error level was removed in /mnt/vendor/phpunit/phpunit/src/Util/ErrorHandler.php on line 99
PHP Deprecated:  Consolidation\Config\Config::__construct(): Implicitly marking parameter $data as nullable is deprecated, the explicit nullable type must be used instead in /mnt/vendor/consolidation/config/src/Config.php on line 33
.
Deprecated: Constant E_STRICT is deprecated since 8.4, the error level was removed in /mnt/vendor/phpunit/phpunit/src/Util/ErrorHandler.php on line 99

Deprecated: Grasmash\Expander\Expander::doExpandArrayProperties(): Implicitly marking parameter $reference_data as nullable is deprecated, the explicit nullable type must be used instead in /mnt/vendor/grasmash/expander/src/Expander.php on line 106

Deprecated: Constant E_STRICT is deprecated since 8.4, the error level was removed in /mnt/vendor/phpunit/phpunit/src/Util/ErrorHandler.php on line 99

Deprecated: Grasmash\Expander\Expander::expandStringPropertiesCallback(): Implicitly marking parameter $reference_data as nullable is deprecated, the explicit nullable type must be used instead in /mnt/vendor/grasmash/expander/src/Expander.php on line 204

Deprecated: Constant E_STRICT is deprecated since 8.4, the error level was removed in /mnt/vendor/phpunit/phpunit/src/Util/ErrorHandler.php on line 99

Deprecated: Consolidation\Config\Config::__construct(): Implicitly marking parameter $data as nullable is deprecated, the explicit nullable type must be used instead in /mnt/vendor/consolidation/config/src/Config.php on line 33