WebGLTextures: Fix multisampled rendering for non-Quest VR browsers. (#24689)
WebGLTextures: Fix multisampled rendering for non-Quest VR browsers. (#24689)

* WebXR: don't force renderbuffer to sRGB format

* rename isVideoTexture to forcePassthroughEncoding in getInternalFormat
06wj/three.js,WestLangley/three.js,makc/three.js.fork,makc/three.js.fork,WestLangley/three.js,06wj/three.js,mrdoob/three.js,mrdoob/three.js