Add PrivatizeFinalClassConstantRector #31777

Job	Run time
Preload php-parser Order	26s
PHPStan	1m 29s
Help and Version	25s
Composer Validate	23s
Run with Space in Directory	24s
Finalize classes	22s
Active Classes	21s
PHP Linter	28s
Compatible PHPStan versions	25s
Detect composer dependency issues	19s
Commented Code	20s
Check no "*.php" files in rules Fixture directory	17s
Check before/after test fixture on no-changes	20s
Check fixture classes are different to nodes	19s
	6m 18s

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