[Feature Request] No history JSON conversion if already done

Is your feature request related to a problem? Please describe.

Today the JSON output from UI and tctl isn't in proto JSON format for enums so we have to change it in each SDK so we can load into history object via proto JSON tools.

Some (all?) history JSON converters will perform this enum conversion (prefixing, snake-casing, and uppercasing) even if it has already been done. This prevents us from potentially changing the output of UI/tctl to use proper proto JSON with this conversion already done.

Describe the solution you'd like

Make sure all SDKs only perform the enum conversion if not already done. Meaning they should ignore conversion if already done by the incoming JSON. Specifically tests should confirm that unconverted and converted JSON both work when provided to the replay API.

Specific issues

• Go (this one is interesting because the converted form is native, so we need to just confirm unconverted works)
• Java
• TypeScript
• Python - https://github.com/temporalio/sdk-python/issues/118
• PHP

Start at each SDK's history JSON converter and replay API tests; the issue names Go, Java, TypeScript, Python, and PHP as targets, with Python linked to issue #118. Done means replay accepts both unconverted and already converted enum JSON without applying conversion twice, with coverage for each applicable SDK.