Backport of UI cluster unseal bug into release/1.12.x

[hc-github-team-secure-vault-core]

Backport

This PR is auto-generated from #20897 to be assessed for backporting due to the inclusion of the label backport/1.12.x.

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The person who merged in the original PR is:
@zofskeez
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merge conflict error: POST https://api.github.com/repos/hashicorp/vault/merges: 409 Merge conflict []

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

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It was discovered that the secret_shares and secret_threshold properties are no longer allowed to be passed when unsealing a cloud seal type cluster. These properties were being passed in the UI causing the unseal to fail. Removing these properties from the payload for seal types other than shamir allows the cluster to be unsealed as expected.

Error before fix:

After fix:

Screen.Recording.2023-05-31.at.2.16.46.PM.mov

Resolves #20644

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Overview of commits

• 0defa2a

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