Describe the bug:
When trying to use the featureGates value in the Helm chart, it only sets it on the controller but not the web hook, making use of something like AdditionalCertificateOutputFormats=true not functional out of the box.

Expected behaviour:
The featureGates should be also configured on the webhook as well.

Steps to reproduce the bug:
set featureGates to AdditionalCertificateOutputFormats=true and you won't be able to use the additional output formats.

Anything else we need to know?:

Environment details::

• Kubernetes version:
• Cloud-provider/provisioner:
• cert-manager version:
• Install method: e.g. helm/static manifests

/kind bug