fix: Fix Typescript declaration file

[kmjennison]

Fixes flaws introduced in #655 and #656

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[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.01 :warning:

Comparison is base (fca162d) 98.39% compared to head (d8b6628) 98.38%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## v1.x #658 +/- ## ========================================== - Coverage 98.39% 98.38% -0.01% ========================================== Files 31 31 Lines 871 869 -2 Branches 257 257 ========================================== - Hits 857 855 -2 Misses 14 14 ``` | [Impacted Files](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team) | Coverage Δ | | |---|---|---| | [src/AuthAction.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL0F1dGhBY3Rpb24udHM=) | `100.00% <ø> (ø)` | | | [src/configTypes.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL2NvbmZpZ1R5cGVzLnRz) | `50.00% <ø> (ø)` | | | [src/redirects.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL3JlZGlyZWN0cy50cw==) | `100.00% <ø> (ø)` | | | [src/firebaseAdmin.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL2ZpcmViYXNlQWRtaW4udHM=) | `94.11% <100.00%> (+0.05%)` | :arrow_up: | | [src/getUserFromCookies.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL2dldFVzZXJGcm9tQ29va2llcy50cw==) | `98.21% <100.00%> (ø)` | | | [src/index.server.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL2luZGV4LnNlcnZlci50cw==) | `100.00% <100.00%> (ø)` | | | [src/index.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL2luZGV4LnRz) | `100.00% <100.00%> (ø)` | | | [src/initCommon.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL2luaXRDb21tb24udHM=) | `100.00% <100.00%> (ø)` | | | [src/setAuthCookies.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL3NldEF1dGhDb29raWVzLnRz) | `100.00% <100.00%> (ø)` | | | [src/unsetAuthCookies.ts](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team#diff-c3JjL3Vuc2V0QXV0aENvb2tpZXMudHM=) | `100.00% <100.00%> (ø)` | | | ... and [3 more](https://app.codecov.io/gh/gladly-team/next-firebase-auth/pull/658?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=gladly-team) | |

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