Backport of [NET-10719] Fix cluster generation for jwt clusters for external jwt providers into release/1.19.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #21604 to be assessed for backporting due to the inclusion of the label backport/1.19.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
will see the cherry-picked commits up to, not including, the commit where
the merge conflict occurred.

The person who merged in the original PR is:
@jm96441n
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: unable to process merge commit: "373ac54c9598a3b3de80837307305ba5d2432040", automatic backport requires rebase workflow

The below text is copied from the body of the original PR.

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Description

JWT clusters were previously not being created correctly, this adds the plumbing to handle this in the enterprise fork

Testing & Reproduction steps

Links

PR Checklist

• updated test coverage
• external facing docs updated
• appropriate backport labels added
• not a security concern

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Overview of commits

• 62264e4 - b63aa1b - 373ac54 - 898b5e8

[github-team-consul-core-pr-approver]

Auto approved Consul Bot automated PR