ApiVersionParameter's x-ms-parameter-location changed by TypeSpec conversion

[mccoyp]

I've been migrating a brownfield service, Key Vault, to TypeSpec (for example, the Secrets library migration PR: Azure/azure-rest-api-specs#29249). Operations are defined with Azure.Core.Foundations.Operation and automatically acquire an Azure.Core.Foundations.ApiVersionParameter.

This new ApiVersionParameter has an x-ms-parameter-location value of "method", which is a breaking change from KV's original API version parameter's x-ms-parameter-location value of "client".

This hasn't seemed to functionally affect clients generated from the new TypeSpec, but the breaking change did raise some concern from our team.