fix(runtime-core): pass unmount into inital mount patch prop

packages/runtime-core/src/renderer.ts

@@ -698,7 +698,8 @@ function baseCreateRenderer(
               isSVG,
               vnode.children as VNode[],
               parentComponent,
-              parentSuspense
+              parentSuspense,
+              unmountChildren
             )
           }
         }