refactor: replace getCurrentInstance with getCurrentGenericInstance in useHost function

Author: edison1105

packages/runtime-core/src/index.ts

@@ -105,6 +105,11 @@ export {
 // plugins
 export { getCurrentInstance } from './component'
 
+/**
+ * @internal
+ */
+export { getCurrentGenericInstance } from './component'
+
 // For raw render function users
 export { h } from './h'
 // Advanced render function utilities

packages/runtime-dom/src/apiCustomElement.ts

@@ -27,7 +27,7 @@ import {
   type VNodeProps,
   createVNode,
   defineComponent,
-  getCurrentInstance,
+  getCurrentGenericInstance,
   nextTick,
   unref,
   warn,
@@ -793,7 +793,7 @@ export class VueElement extends VueElementBase<
 }
 
 export function useHost(caller?: string): VueElementBase | null {
-  const instance = getCurrentInstance()
+  const instance = getCurrentGenericInstance()
   const el = instance && (instance.ce as VueElementBase)
   if (el) {
     return el