enable refactor() no null returns rule #31568

Job	Run time
Composer Validate	23s
Run with Space in Directory	19s
Preload php-parser Order	23s
Compatible PHPStan versions	30s
Commented Code	22s
Help and Version	20s
Check fixture classes are different to nodes	28s
PHPStan	1m 34s
Active Classes	24s
Check before/after test fixture on no-changes	20s
Check no "*.php" files in rules Fixture directory	16s
Finalize classes	28s
Detect composer dependency issues	20s
PHP Linter	31s
	6m 38s

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