Remove global router mock

[TomasEng]

Currently, the react-router-dom package is mocked globally with the following setup:

jest.mock('react-router-dom', () => ({
  ...jest.requireActual('react-router-dom'),
  useParams: () => ({ org, app }),
}));

This is not ideal since we need to bypass it when we want to test the routing. Instead, we should render the components inside the provider components BrowserRouter or MemoryRouter when testing, or (as a last resort) mock the package on file level.