chore: simplify getting exception name (#9916) #4

Job	Run time
publish-images	25m 50s
generate-kyverno-init-provenance / detect-env	2s
generate-cleanup-controller-provenance / detect-env	2s
generate-background-controller-provenance / detect-env	3s
generate-kyverno-cli-provenance / detect-env	3s
generate-kyverno-provenance / detect-env	3s
generate-reports-controller-provenance / detect-env	4s
generate-kyverno-init-provenance / generator	12s
generate-kyverno-provenance / generator	13s
generate-kyverno-cli-provenance / generator	14s
generate-background-controller-provenance / generator	25s
generate-cleanup-controller-provenance / generator	24s
generate-reports-controller-provenance / generator	21s
generate-kyverno-init-provenance / final	1s
generate-kyverno-provenance / final	1s
generate-kyverno-cli-provenance / final	1s
generate-reports-controller-provenance / final	1s
generate-cleanup-controller-provenance / final	1s
generate-background-controller-provenance / final	1s
	28m 2s

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