Update the engine features with the right value

[Popov72]

From an email sent to Gary:

I forgot to say when merging the WebGPU changes to the master branch that I added a new EngineFeature property to the engine, which basically replaces all the occurrences of engine.webGLVersion that were used for testing purposes by a test in the feature property. For the time being, all the features are false for native engine as I didn't know what the right value would be.

So, that's something you (or someone else in the Native team) will need to update to match the capabilities of the engine. There's a comment for each capability in the engineFeatures.ts file, but feel tree to ask me if something is not clear.

[bghgary]

This is to correctly set the engine._caps from the native side.

[bghgary]

This is similar and basically a dupe of #1163