Fix 2.3.x-dev build errors

[staabm]

There were 2 errors:

1) PHPStan\Rules\ForLoop\OverwriteVariablesWithForLoopInitRuleTest::testRule
PHPStan\ShouldNotHappenException: getReadWritePropertiesExtensions(), shouldPolluteScopeWithLoopInitialAssignments() and shouldPolluteScopeWithAlwaysIterableForeach() no longer configure the analysis. Register the extensions as services and set the parameters in a config file returned from getAdditionalConfigFiles() instead.

phar:///home/runner/work/phpstan-src/phpstan-src/extension/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:77
phar:///home/runner/work/phpstan-src/phpstan-src/extension/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:85
phar:///home/runner/work/phpstan-src/phpstan-src/extension/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:202
phar:///home/runner/work/phpstan-src/phpstan-src/extension/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:97
/home/runner/work/phpstan-src/phpstan-src/extension/tests/Rules/ForLoop/OverwriteVariablesWithForLoopInitRuleTest.php:21

2) PHPStan\Rules\ForLoop\OverwriteVariablesWithForLoopInitRuleTest::testLoopVariableReuse
PHPStan\ShouldNotHappenException: getReadWritePropertiesExtensions(), shouldPolluteScopeWithLoopInitialAssignments() and shouldPolluteScopeWithAlwaysIterableForeach() no longer configure the analysis. Register the extensions as services and set the parameters in a config file returned from getAdditionalConfigFiles() instead.

phar:///home/runner/work/phpstan-src/phpstan-src/extension/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:77
phar:///home/runner/work/phpstan-src/phpstan-src/extension/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:85
phar:///home/runner/work/phpstan-src/phpstan-src/extension/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:202
phar:///home/runner/work/phpstan-src/phpstan-src/extension/vendor/phpstan/phpstan/phpstan.phar/src/Testing/RuleTestCase.php:97
/home/runner/work/phpstan-src/phpstan-src/extension/tests/Rules/ForLoop/OverwriteVariablesWithForLoopInitRuleTest.php:67

[staabm]

after this change

There were 2 failures:

1) PHPStan\Levels\LevelsIntegrationTest::testLevels with data set #0 ('arithmeticOperators')
Failed asserting that file "/Users/staabm/workspace/phpstan-strict-rules/tests/Levels/data/arithmeticOperators-4.json" exists.

phar:///Users/staabm/workspace/phpstan-strict-rules/vendor/phpstan/phpstan/phpstan.phar/src/Testing/LevelsTestCase.php:148
phar:///Users/staabm/workspace/phpstan-strict-rules/vendor/phpstan/phpstan/phpstan.phar/src/Testing/LevelsTestCase.php:110

2) PHPStan\Levels\LevelsIntegrationTest::testLevels with data set #2 ('foreach')
Failed asserting that file "/Users/staabm/workspace/phpstan-strict-rules/tests/Levels/data/foreach-4.json" exists.

phar:///Users/staabm/workspace/phpstan-strict-rules/vendor/phpstan/phpstan/phpstan.phar/src/Testing/LevelsTestCase.php:148
phar:///Users/staabm/workspace/phpstan-strict-rules/vendor/phpstan/phpstan/phpstan.phar/src/Testing/LevelsTestCase.php:110

FAILURES!
Tests: 67, Assertions: 151, Failures: 2.

this error is left