Examples: Make domElement to a mandatory parameter for all controls.

[Mugen87]

Replacement of #16336

This PR makes domElement to a mandatory ctor parameter. No default value (like document) is set anymore. OrbitControls and TrackballControls have an additional check which warns users when they use document as a ctor argument. The reason for this is explained here: #16326 (comment)

[mrdoob]

Looking great!

[mrdoob]

Thanks!

[SalazarRiva]

I'm sorry, I'm a bit lost with this change here. I get it is supposed to get something fixed, but I do not get how I'm supposed to handle this - if up till now I could get away with controls = new THREE.OrbitControls( camera ) - where should I add a change. Is there an example somewhere with what changes I should do?

[Mugen87]

Instead of

const controls = new THREE.OrbitControls( camera );

do this:

const controls = new THREE.OrbitControls( camera, renderer.domElement );