fix: Custom Question Answering in MS Teams

[anishprasad01]

Fixes #6599

Description

The ResetOption method in the QnAMakerDialog class attempts to cast the QnAId from the context into an int64. Microsoft Teams sends back a JObject which causes this conversion to fail. This PR modifies the casting logic to attempt a long.TryParse first, and defaults the QnAId to 0 if the conversion is not possible.

Specific Changes

• Add a TryParse of the QnAId object. Take the casted variable if it succeeds, or a default value of 0 if it fails.

Testing

All QnA tests passing.

[coveralls]

Pull Request Test Coverage Report for Build 344405

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 3 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.009%) to 79.095%

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Files with Coverage Reduction	New Missed Lines	%
/libraries/AdaptiveExpressions/BuiltinFunctions/GetNextViableTime.cs	1	90.91%
/libraries/AdaptiveExpressions/BuiltinFunctions/GetPreviousViableTime.cs	1	90.91%
/libraries/Microsoft.Bot.Connector.Streaming/Application/TimerAwaitable.cs	1	68.25%

Totals
Change from base Build 343443:	-0.009%
Covered Lines:	25812
Relevant Lines:	32634

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💛 - Coveralls

[BruceHaley]

✔️ No Binary Compatibility issues for Microsoft.Bot.Builder.AI.QnA.dll