fix: #4566 Refactor Teams config fetch & submit typings

[corinagum]

Fixes #4566
Related to #4567

Description

Cleanup the typings for Teams config fetch & submit.

Specific Changes

• Export union type ConfigResponseConfig instead of extending ConfigResponse

[coveralls]

Pull Request Test Coverage Report for Build 6869103706

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• 0 of 0 changed or added relevant lines in 0 files are covered.
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• Overall coverage remained the same at 84.635%

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Totals
Change from base Build 6858336486:	0.0%
Covered Lines:	20336
Relevant Lines:	22760

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