fix: cnot gate gets properly decomposed so catch proper test error

[AbeCoull]

Issue #, if available:

Description of changes: https://github.com/PennyLaneAI/pennylane/blob/cb6f1cdb8cda09eae9113284eb12b9dde18544a2/doc/releases/changelog-0.35.0.md?plain=1#L612

Testing done:

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