Vehicle wheels have no collision on HTML5

A Wheeled Vehicle's wheels do not have collision when packaged into an HTML5 game.

Regression?: Yes
This issue did not occur in 4.13.2

Note: This is currently blocked from testing in Main as the PhysX Vehicles and Raw Input plugins are not currently being included when packaging to HTML5. Will know soon if that is intended or not.

1. Create a new project based off the Vehicle Advanced Template
2. Package the project for HTML5
3. Launch the packaged game in your browser
   Result: The vehicle's wheels do not collide with anything, resulting in the chassis resting on the ground
   Expected: The vehicle's wheels should collide as usual