Restore operator CRD conversion webhooks

[kahirokunn]

Fixes #

Proposed Changes

• Restore the conversion webhook stanza in the generated KnativeServing and KnativeEventing CRD bases after controller-gen runs.
• Make Helm CRD sync derive conversion settings from the CRD bases and only template the webhook service namespace.
• Extend codegen verification to include config/crd/bases, so future generated CRD drift is caught.

Release Note

Restore conversion webhook configuration in Knative Operator CRDs generated for release manifests.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.84%. Comparing base (a7151da) to head (1e0402a).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2293   +/-   ##
=======================================
  Coverage   63.84%   63.84%           
=======================================
  Files          55       55           
  Lines        2478     2478           
=======================================
  Hits         1582     1582           
  Misses        777      777           
  Partials      119      119           

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[houshengbo]

/cherry-pick release-1.22
/lgtm
/approve

[knative-prow-robot]

@houshengbo: once the present PR merges, I will cherry-pick it on top of release-1.22 in a new PR and assign it to you.

Details

In response to this:

/cherry-pick release-1.22
/lgtm
/approve

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[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: houshengbo, kahirokunn

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[knative-prow-robot]

@houshengbo: new pull request created: #2294

Details

In response to this:

/cherry-pick release-1.22
/lgtm
/approve

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.