test(compiler-vapor): add temporary test TODO

packages/compiler-vapor/__tests__/compile.spec.ts

@@ -1,6 +1,10 @@
 import { BindingTypes, type RootNode } from '@vue/compiler-dom'
 import { type CompilerOptions, compile as _compile } from '../src'
 
+// TODO This is a temporary test case for initial implementation.
+// Remove it once we have more comprehensive tests.
+// DO NOT ADD MORE TESTS HERE.
+
 function compile(template: string | RootNode, options: CompilerOptions = {}) {
   let { code } = _compile(template, {
     ...options,