fix: OOM crash in RemoveUnusedVariableAssignRector (#7964) #33776

Job	Run time
End to end test - e2e/applied-polyfill-php80	23s
End to end test - e2e/applied-rule-removed-node	17s
End to end test - e2e/applied-rule-return-array-nodes	24s
End to end test - e2e/applied-rule-change-docblock	18s
End to end test - e2e/applied-auto-import	18s
End to end test - e2e/only-option-quote-single	20s
End to end test - e2e/config-file-priority	23s
End to end test - e2e/only-option	20s
End to end test - e2e/config-dist-fallback	20s
End to end test - e2e/different-path-over-skip-config	18s
End to end test - e2e/parallel with space	22s
End to end test - e2e/invalid-paths	19s
End to end test - e2e/parallel-custom-config	20s
End to end test - e2e/print-new-node	18s
End to end test - e2e/no-parallel-reflection-resolver	21s
End to end test - e2e/only-option-quote-single-bsdouble	20s
End to end test - e2e/only-option-quote-single-equalnone	15s
End to end test - e2e/parallel-reflection-resolver	21s
End to end test - e2e/only-option-quote-double-equalnone	19s
	6m 16s

Provide feedback