chore: update

Author: Simon he

src/sThree.ts

@@ -382,14 +382,14 @@ export function sThree(container: HTMLElement | string, options: SThreeOptions):
       })
     }
     scene!._add = function (...args: any[]) {
-      scene.add(...args)
+      scene!.add(...args)
       const result = args.map(arg => () => unmount(arg))
       return result.length === 1 ? result[0] : result
       function unmount(arg: Mesh) {
         const { material, geometry } = arg;
         (material as any).dispose()
         geometry.dispose()
-        scene.remove(arg)
+        scene!.remove(arg)
       }
     }
     createMesh?.()