OSX Mojave security update requires each app to ask permission when using webcam. However, recent Standalone Players fail to start the conversation and causes issue for the Player.

Repro:
1. Download attached project
2. Launch and build in Editor
3. Run the Player
4. Observe if the app asking for permission
5. Mac System Preference -> Security & Privacy -> Privacy -> Camera and see if the Player app is in the list

Actual:
On 2019.3.0a3, the Player is added to the Privacy list but is automatically set to disallowed.
On 2019.3.0a5, the Player isn't added to the list at all.

Because of bug #1159086, the Player just crash at launch.