Add Animation Blend modes constants to documentation (#24428)
Add Animation Blend modes constants to documentation (#24428)

Co-authored-by: decuyper <7e2384aa1cfa7c6f101c973bba99c95628756856@orbitus.be>
06wj/three.js,06wj/three.js,aardgoose/three.js,WestLangley/three.js,WestLangley/three.js,makc/three.js.fork,mrdoob/three.js,mrdoob/three.js,makc/three.js.fork,aardgoose/three.js