PMREM: Implement GGX VNDF importance sampling (#32114)

* PMREM: Implement GGX importance sampling.

* Updated builds.

* Replaced GGX importance sampling with GGX VNDF importance sampling.

* Clean up.

* Updated builds.

* Revert builds.

* Updated screenshots.

* Updated comments.

* Clean up.

* Clean up.

* Increased e2e timeout.

* Updated screenshots.

* Added one more computer to ci.yml

* Puppeteer: Increased to 5 threads.