Simplify OIDC types & export `decodeIdToken` (#4193)
* Fix types
Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
* Export `decodeIdToken`
Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
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Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
