[BUG] invalid `dynamic_template` (includes auto-generated `"type": "object"`)

see https://github.com/opensearch-project/spring-data-opensearch/issues/437
this seems to come from this client

What is the bug?

using dynamic_template generates a wrong template (it includes "type": "object") which then leads to wrong behaviour when ingesting field names with dots in it.

the problem seems to come from here:
https://github.com/opensearch-project/opensearch-java/blob/61567fa5b67ab62880a5f503b5cf1bcea31af562/java-client/src/generated/java/org/opensearch/client/opensearch/_types/mapping/Property.java#L1440

which was previously here (got moved around in a recent re-generation):
https://github.com/opensearch-project/opensearch-java/blob/39552405c07a685fa4d0c29995895439db1d2682/java-client/src/main/java/org/opensearch/client/opensearch/_types/mapping/Property.java#L1494

How can one reproduce the bug?

see https://github.com/opensearch-project/spring-data-opensearch/issues/437

What is the expected behavior?

the provided example works both with the old and new client. more concretely: opensearch-java mustn't inject "type": "object" into the dynamic_template

What is your host/environment?

n/a

Do you have any screenshots?

n/a

Do you have any additional context?

n/a

Start in java-client/src/generated/java/org/opensearch/client/opensearch/_types/mapping/Property.java around the dynamic_template handling at the referenced line, comparing it with the previous location. Reproduce the example from spring-data-opensearch issue 437 and inspect the generated template. Done means opensearch-java no longer injects "type": "object" into dynamic_template.