chore: rename template ref module

Author: yyx990803

src/core/vdom/modules/index.ts

@@ -1,4 +1,4 @@
 import directives from './directives'
-import ref from './ref'
+import ref from './template-ref'
 
 export default [ref, directives]

src/core/vdom/modules/ref.ts renamed to src/core/vdom/modules/template-ref.ts

@@ -13,7 +13,7 @@
 import VNode, { cloneVNode } from './vnode'
 import config from '../config'
 import { SSR_ATTR } from 'shared/constants'
-import { registerRef } from './modules/ref'
+import { registerRef } from './modules/template-ref'
 import { traverse } from '../observer/traverse'
 import { activeInstance } from '../instance/lifecycle'
 import { isTextInputType } from 'web/util/element'