fix: only pass key if child is Fragment

Author: yangpj17

src/CSSMotionList.tsx

@@ -130,7 +130,9 @@ export function genCSSMotionList(
 
       const Component = component || React.Fragment;
       const motionProps = pick(restProps, MOTION_PROP_NAMES as any);
-      const componentProps = omit(restProps, MOTION_PROP_NAMES as any);
+      const componentProps = component
+        ? pick(restProps, ['key'] as any)
+        : omit(restProps, [...MOTION_PROP_NAMES, 'keys'] as any);
 
       return (
         <Component {...componentProps}>