indices.breaker.total.use_real_memory is not a dynamic cluster setting

[ppf2]

7.1.0

The documentation indicates that both indices.breaker.total.use_real_memory and indices.breaker.total.limit are dynamic cluster settings.

For the real memory breaker, only indices.breaker.total.limit is dynamically updatable.

indices.breaker.total.use_real_memory is not.

{
  "error": {
    "root_cause": [
      {
        "type": "illegal_argument_exception",
        "reason": "transient setting [indices.breaker.total.use_real_memory], not dynamically updateable"
      }
    ],
    "type": "illegal_argument_exception",
    "reason": "transient setting [indices.breaker.total.use_real_memory], not dynamically updateable"
  },
  "status": 400
}

If indices.breaker.total.use_real_memory is not intended to be dynamic, please clarify in the doc. Thx!

[elasticmachine]

Pinging @elastic/es-core-infra