fix(controller): handle case of configmap already exists on offload EnvVarTemplate. Fixes #13755 #13756
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Fixes #13755
Motivation
if workflow pod used offload envVarTemplate, when pod create failed, and a transient error occurred. The pod will retry on moment, then this node will failed with IsAlreadyExists error.
Modifications
We should process
Already Exists
errorVerification
The best way to verifiy is constructing a too lang template, and than simulate a transient error