Update .d.ts for loaders

WebGLRenderer: Gracefully handle geometries in initial state.

Revert Adreno double-sided front-facing workaround

Update typedef for WebGLGeometries and others

Update .d.ts for BufferAttributes

Material: Introduce version property.

Added squeeze* input events for WebVR and WebXR Managers

Optimize Box3.expandByObject

Update Polyfill for Helio 0.98.

revert and refactor 2HalfToRGBA

Document the copy behavior of .set in math classes

Improving documentation for .set() methods in math classes. #17738

As mentioned in #17738, math classes keep the arguments passed in their
constructor as references, but when they provide a .set() method,
that one only copies the values from the passed objects.
This behavior is now documented in the relevant classes.

The comment is worded to not interfere too much with possible future
changes to the function's implementation.