test: clean up restoreAllMocks()

clearAllMocks() does not remove mock implementations, so we need to be
using restoreAllMocks() instead. Also ensure that it is called first
in case the other cleanup code needs to call a mocked function.

src/explorer/Explorer.test.tsx

@@ -16,8 +16,8 @@ import {
 } from './actions';
 
 afterEach(async () => {
+    jest.restoreAllMocks();
     cleanup();
-    jest.clearAllMocks();
     localStorage.clear();
 });
 

src/licenses/LicenseDialog.test.tsx

@@ -8,9 +8,9 @@ import { testRender } from '../../test';
 import LicenseDialog from './LicenseDialog';
 
 afterEach(() => {
+    jest.restoreAllMocks();
     cleanup();
     localStorage.clear();
-    jest.clearAllMocks();
 });
 
 describe('LicenseDialog', () => {