fix(utils): Wrap uuid.v4 to disallow passing extra arguments and prevent dependency on uuid package types (#509)

Summary:

Reverts part of a prior change in the utils package for two reasons:
- uuid.v4 has different behavior when passed arguments. We have no use for this behavior, thus it is better to ensure no arguments are accidentally passed.
- We don't want our type definitions to be dependent on uuid's type definitions

Test plan:

Existing tests

Author: mjc1283

packages/utils/src/index.ts

@@ -13,7 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-export { v4 as generateUUID } from 'uuid'
+import { v4 } from 'uuid';
+
+export function generateUUID(): string {
+  return v4()
+}
 
 export type Omit<T, K> = Pick<T, Exclude<keyof T, K>>