Updated OAuthInput to be on parity with dotnet sdk

[chon219]

Fixes #2034
Fixes #2152
Fixes #2396

Description

Updated OAuthInput to be on parity with dotnet sdk.

Specific Changes

• Updated implementation of OAuthInput
• Fixed alwaysPrompt related bug in OAuthInput
• Fixed interruption related bug in OAuthInput

Testing

We don't have unit tests for OAuthInput in both c# and js sdk, we may need to test it e2e to make sure everything work as expected.

[coveralls]

Pull Request Test Coverage Report for Build 143845

• 9 of 110 (8.18%) changed or added relevant lines in 1 file are covered.
• 3 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.4%) to 80.607%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
libraries/botbuilder-dialogs-adaptive/src/input/oauthInput.ts	9	110	8.18%

Files with Coverage Reduction	New Missed Lines	%
libraries/botbuilder-dialogs-adaptive/src/input/oauthInput.ts	3	3.95%

Totals
Change from base Build 143813:	-0.4%
Covered Lines:	12979
Relevant Lines:	15377

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💛 - Coveralls

[chon219]

We should fix #2152 and #2396 as well in this PR are they are all about oauthinput.

[chon219]

We may need to test OAuthInput E2E to make sure it will work as expected.

[luhan2017]

I have tested this PR e2e and found that the OAuthInput doesn't work as expected in skill mode. I think we need to port the updates from this commit, 1a2a64a

[luhan2017]

Test e2e for both bot mode and skill mode, both work well.