(Draft) Added logic to check for duplicate env vars based on differen…

[HoustonBoston]

…t types of objects.

What type of PR is this?

What this PR does / why we need it:

/kind bug

This is a draft pull request to de-duplicate environment variables in objects with containers in the client side before it's sent to the server.

Which issue(s) this PR is related to:

Fixes #58477

Special notes for your reviewer:

Does this PR introduce a user-facing change?

N/A

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @HoustonBoston. Thanks for your PR.

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[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: HoustonBoston
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