[Vertex AI] Add EncodableProtoEnum
protocol and fix encoding
#13862
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Added a protocol
EncodableProtoEnum
similar toDecodableProtoEnum
(added in #13859) that provides a defaultEncodable
implementation for Swift structs representing Protobuf enums. Before the default encoding produced invalid JSON forHarmCategory
(refactored as a struct in #13854), e.g.:This PR resolves the nested object with a
raw_value
issue and produces:The integration tests have been updated to make use of
SafetySetting
(includingHarmCategory
) to catch encoding issues.#no-changelog