UE::AutoSDK::GetSDKInfo hangs if SDK JSON config can't be loaded

Development Pipeline & Plugins
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2

Steps to Reproduce

  1. Add a comment line (“// comment”) to Engine/Config/Windows/Windows_SDK.json
  2. Run an automated task (e.g. cooking) that uses AutoSDK

UE::AutoSDK::GetSDKInfo will get into an infinite loop because GetJsonObject never returns a non-null value.