Flow strict DrawerLayout (#22152)

Summary:
Issue in focus: #22100

The only occurrence of `Object` was replaced with the appropriate flow type
A Lint error was encountered in `deepFreezeAndThrowOnMutationInDev-test.js` when running `npm run lint` and was fixed by running `yarn prettier`
Pull Request resolved: https://github.com/facebook/react-native/pull/22152

Differential Revision: D12930872

Pulled By: RSNara

fbshipit-source-id: f9706ed2e49d9ccedfa331594c886d2d3b615db5

Libraries/Components/DrawerAndroid/DrawerLayoutAndroid.android.js

@@ -152,7 +152,7 @@ const DrawerLayoutAndroid = createReactClass({
 
   mixins: [NativeMethodsMixin],
 
-  getDefaultProps: function(): Object {
+  getDefaultProps: function(): {drawerBackgroundColor: string} {
     return {
       drawerBackgroundColor: 'white',
     };

Libraries/Utilities/__tests__/deepFreezeAndThrowOnMutationInDev-test.js

@@ -134,7 +134,7 @@ describe('deepFreezeAndThrowOnMutationInDev', function() {
     expect(o.key1.key2).toBe('newValue');
   });
 
-  it('shouldn\'t recurse infinitely', () => {
+  it("shouldn't recurse infinitely", () => {
     __DEV__ = true;
     const o = {};
     o.circular = o;