[BUG] plugins.calcite.enabled setting does not work

[penghuo]

What is the bug?
plugins.calcite.enabled setting does not work

How can one reproduce the bug?
Follow https://github.com/opensearch-project/sql/blob/main/docs/user/ppl/cmd/lookup.rst,

• In main branch, launch OpenSearch 3.0 with SQL Plugin

./gradlew opensearch-sql:run -DdebugJVM

• Enable calcite

curl -H 'Content-Type: application/json' -X PUT localhost:9200/_plugins/_query/settings -d '{
  "transient" : {
    "plugins.calcite.enabled" : true
  }
}'

• Got error

{"error":{"root_cause":[{"type":"action_request_validation_exception","reason":"Validation Failed: 1: no settings to update;"}],"type":"action_request_validation_exception","reason":"Validation Failed: 1: no settings to update;"},"status":400}

What is the expected behavior?
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