Workaround problems in `google.cloud.aiplatform.v1.QueryDeployedModelsResponse.deployed_models`

This:

https://github.com/googleapis/googleapis/blob/119966f0efe4dbe41315de54d8e00ab9c05113a2/google/cloud/aiplatform/v1/deployment_resource_pool_service.proto#L219-L220

generates code that won't compile. We need to access the field to implement the pagination API, but the field is deprecated, so any access generates a warning and that breaks with `-Werror`. As a workaround I am omitting the RPC, but we should figure out what to do later.

Maybe disable warnings in some RPCs? Or in that code?

Start with google/cloud/aiplatform/v1/deployment_resource_pool_service.proto at lines 219-220 and inspect the generated QueryDeployedModelsResponse::deployed_models code. Reproduce the compilation failure with -Werror and trace how the field is accessed for pagination. Done means the RPC can support pagination without the deprecated-field warning breaking compilation, with the chosen warning-handling approach documented or tested.

Written by the indexing model from the issue text.