Pass by value in policy cache

[realshuting]

Signed-off-by: Shuting Zhao shutting06@gmail.com

Related issue

/bug

Fixes #1894.

cc @vyankyGH

What type of PR is this

Proposed Changes

Since we are not changing any values that are passed by reference, this PR passes those parameters by value instead.

Proof Manifests

Checklist

• I have read the contributing guidelines.
• [] I have added tests that prove my fix is effective or that my feature works.
• [] My PR contains new or altered behavior to Kyverno and
  • [] I have added or changed the documentation myself in an existing PR and the link is:
  • [] I have raised an issue in kyverno/website to track the doc update and the link is:
  • [] I have read the PR documentation guide and followed the process including adding proof manifests to this PR.

Further Comments

[realshuting]

@yashvardhan-kukreja - can you also help review the fix?

[yashvardhan-kukreja]

@yashvardhan-kukreja - can you also help review the fix?

Sure 👍