Serialization for hash panics on TypeMap
Serialization for hash panics on TypeMap

The serializeCollectionMemberForHash helper can't be called for the
MapType values, because MapType doesn't have a schema.Elem. Instead, we
can write the key/value pairs directly to the buffer. This still doesn't
allow for nested maps or lists, but we need to define that use case
before committing to it here.

hashicorp/terraform-plugin-sdk,hashicorp/terraform-plugin-sdk