fix(runtime-vapor): handle prop when vapor renders vdom component

packages/runtime-vapor/__tests__/vdomInterop.spec.ts

@@ -49,6 +49,28 @@ describe('vdomInterop', () => {
 
       expect(html()).toBe('foo')
     })
+
+    test('should handle class prop when vapor renders vdom component', () => {
+      const VDomChild = defineComponent({
+        setup() {
+          return () => h('div', { class: 'foo' })
+        },
+      })
+
+      const VaporChild = defineVaporComponent({
+        setup() {
+          return createComponent(VDomChild as any, { class: () => 'bar' })
+        },
+      })
+
+      const { html } = define({
+        setup() {
+          return () => h(VaporChild as any)
+        },
+      }).render()
+
+      expect(html()).toBe('<div class="foo bar"></div>')
+    })
   })
 
   describe('v-model', () => {

packages/runtime-vapor/src/componentProps.ts

@@ -370,7 +370,10 @@ function propsDeleteDevTrap(_: any, key: string | symbol) {
 }
 
 export const rawPropsProxyHandlers: ProxyHandler<RawProps> = {
-  get: getAttrFromRawProps,
+  get(target, key) {
+    if (key === ReactiveFlags.RAW) return target
+    return getAttrFromRawProps(target, key as string)
+  },
   has: hasAttrFromRawProps,
   ownKeys: getKeysFromRawProps,
   getOwnPropertyDescriptor(target, key: string) {