Backport of Resolve unrecognized parameter warnings on batch_input parameter in transit into release/1.11.x

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

Backport

This PR is auto-generated from #18299 to be assessed for backporting due to the inclusion of the label backport/1.11.x.

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

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While playing around with #18243, I noticed operations that properly accepted the batch_input parameter were returning warnings about it being an unrecognized parameter. This should fix those issues across the transit APIs. Also fix a little glitch in the transit docs related to a batch_input parameter description.

❯ vault secrets enable transit
Success! Enabled the transit secrets engine at: transit/
❯ vault write transit/keys/test type=rsa-4096
Success! Data written to: transit/keys/test
❯ cat input.json | vault write -format=json transit/encrypt/test - | jq
{
  "request_id": "737ad91e-1303-2992-8fdc-d62ff8b35a1d",
  "lease_id": "",
  "lease_duration": 0,
  "renewable": false,
  "data": {
    "batch_results": [
      {
        "ciphertext": "vault:v1: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",
        "key_version": 1
      },
      {
        "ciphertext": "vault:v1: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",
        "key_version": 1
      }
    ]
  },
  "warnings": [
    "Endpoint ignored these unrecognized parameters: [batch_input]"
  ]
}

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