Correct multiple secret values in one array parameter that references different secret variables

[SaschaSchwarze0]

Changes

There is a bug when defining the following Build:

spec:
  paramValues:
    name: param-name
    values:
    - secretValue:
        name: secret-name
        key: key-1
        format: ARG_NAME1=${SECRET_VALUE}
    - secretValue:
        name: secret-name
        key: key-2
        format: ARG_NAME2=${SECRET_VALUE}

Due to the way we iterate over the values, we caused the TaskRun to only have references to key-2. Unfortunatly, our existing unit test did not capture that. Also extending those.

Submitter Checklist

• [x] Includes tests if functionality changed/was added
• [ ] Includes docs if changes are user-facing
• [x] Set a kind label on this PR
• [x] Release notes block has been filled in, or marked NONE

Release Notes

The usage of different secrets or secret keys as values inside one array parameter is now possible

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: qu1queee

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[SaschaSchwarze0]

/cherrypick release-v0.13

[openshift-cherrypick-robot]

@SaschaSchwarze0: new pull request created: #1593

In response to [this](https://github.com/shipwright-io/build/pull/1566#issuecomment-2094863543): >/cherrypick release-v0.13 Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.