Improve AWS Query compatible error handling in unmarshallers#4253

muhammad-othman merged 2 commits intoaws-sdk-net-v3.7-developmentaws/aws-sdk-net:aws-sdk-net-v3.7-developmentfrom

muhamoth/DOTNET-8439-v3-bug-AWS-Query-protocol-migration-compatibilityaws/aws-sdk-net:muhamoth/DOTNET-8439-v3-bug-AWS-Query-protocol-migration-compatibilityCopy head branch name to clipboard