Update test setup to reset and restore all mocks between each test

[mcmire]

Currently we are not setting resetMocks: true and restoreMocks: true within jest.config.js. We should enable this and remove calls to jest.clearAllMocks() and jest.resetAllMocks() within test files.

Note that this may require substantial changes for any test suites that rely heavily upon shared mocks.

[Gudahtt]

Update: We are setting restoreMocks today. But not resetMocks.