[type-declarations] Add KnownMagicClassMethodTypeRector #30779

Job	Run time
Composer Validate	26s
Run with Space in Directory	18s
Preload php-parser Order	24s
Help and Version	20s
Compatible PHPStan versions	20s
PHPStan	1m 20s
Check no "*.php" files in rules Fixture directory	22s
Active Classes	28s
Check before/after test fixture on no-changes	25s
Commented Code	21s
Finalize classes	20s
Detect composer dependency issues	27s
	5m 31s

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