Fix Github tests

[samtstern]

This fixes #1425

We can't add a dependency from auth to auth-github because that would be circular.

Maybe we need an auth-common module in the long term? That would be a bit unfortunate, but could fix the issue.

[SUPERCILEX]

Whoa, that's a public API, not part of TestConstants. 😛 I wasn't merged up with master before so I didn't see the changes. Here's how I fixed it:

FirebaseUI-Android/auth/src/test/java/com/firebase/ui/auth/viewmodel/SocialProviderResponseHandlerTest.java

Lines 74 to 76 in 98353a7

	List<String> allExceptGitHub = new ArrayList<>(AuthUI.SUPPORTED_PROVIDERS);
	allExceptGitHub.remove(GithubAuthProvider.PROVIDER_ID);
	FlowParameters testParams = TestHelper.getFlowParameters(allExceptGitHub);

If we did that here:

FirebaseUI-Android/auth/src/test/java/com/firebase/ui/auth/viewmodel/SocialProviderResponseHandlerTest.java

Lines 319 to 320 in 98353a7

	FlowParameters testParams = TestHelper.getFlowParameters(AuthUI.SUPPORTED_PROVIDERS, /* enableAnonymousUpgrade */ true);
	mHandler.initializeForTesting(testParams, mMockAuth, null, null);

it should work.

[SUPERCILEX]

But yeah, I couldn't find a way to include GitHub in the tests. 😢

[samtstern]

Oh holy crap haha I did not look at my file path!

[SUPERCILEX]

No prob 😆