feat(compiler): mark hoisted trees with patchFlag

packages/compiler-core/src/transforms/hoistStatic.ts

@@ -52,6 +52,7 @@ function walk(
     ) {
       if (!doNotHoistNode && isStaticNode(child, resultCache)) {
         // whole tree is static
+        ;(child.codegenNode as VNodeCall).patchFlag = PatchFlags.HOISTED + ``
         const hoisted = context.transformHoist
           ? context.transformHoist(child, context)
           : child.codegenNode!