[DX] Warn about ->withPhpSets() called multiple times, to avoid inval… #28665

Job	Run time
End to end test - e2e/applied-rule-change-docblock	13s
End to end test - e2e/applied-rule-return-array-nodes	14s
End to end test - e2e/no-parallel-reflection-resolver	14s
End to end test - e2e/parallel-custom-config	15s
End to end test - e2e/parallel-reflection-resolver	14s
End to end test - e2e/applied-rule-removed-node	14s
End to end test - e2e/parallel with space	13s
End to end test - e2e/different-path-over-skip-config	14s
End to end test - e2e/invalid-paths	22s
End to end test - e2e/applied-polyfill-php80	18s
End to end test - e2e/print-new-node	23s
End to end test - e2e/only-option	14s
End to end test - e2e/only-option-quote-double-equalnone	21s
End to end test - e2e/only-option-quote-single	14s
End to end test - e2e/only-option-quote-single-bsdouble	14s
End to end test - e2e/only-option-quote-single-equalnone	15s
	4m 12s

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