[wip] optimizing node traversing #31656

Job	Run time
Commented Code	20s
Help and Version	19s
Run with Space in Directory	25s
Compatible PHPStan versions	23s
Preload php-parser Order	23s
Check before/after test fixture on no-changes	21s
Composer Validate	23s
Active Classes	21s
PHPStan	1m 43s
Detect composer dependency issues	20s
Finalize classes	28s
Check fixture classes are different to nodes	17s
Check no "*.php" files in rules Fixture directory	23s
PHP Linter	23s
	6m 29s

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