fix: OOM crash in RemoveUnusedVariableAssignRector #32433

Job	Run time
PHPStan	55s
Composer Validate	20s
Finalize classes	23s
Check no "*.php" files in rules Fixture directory	20s
Compatible PHPStan versions	15s
Check before/after test fixture on no-changes	19s
Avoid duplicate short class names	17s
Run with Space in Directory	16s
Commented Code	18s
Detect composer dependency issues	22s
Check fixture classes are different to nodes	18s
Preload php-parser Order	17s
Active Classes	20s
Help and Version	20s
PHP Linter	24s
	5m 24s

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