Fix RenderState hash invalidation in stencil setters and flipFaceCull#2603

Copilot wants to merge 2 commits intomasterjMonkeyEngine/jmonkeyengine:masterfrom

copilot/setters-missing-hash-invalidationjMonkeyEngine/jmonkeyengine:copilot/setters-missing-hash-invalidationCopy head branch name to clipboard