fix(v-model): handle mutations of v-model bound array/sets

fix #4096

packages/runtime-dom/src/directives/vModel.ts

@@ -99,6 +99,8 @@ export const vModelText: ModelDirective<
 }
 
 export const vModelCheckbox: ModelDirective<HTMLInputElement> = {
+  // #4096 array checkboxes need to be deep traversed
+  deep: true,
   created(el, _, vnode) {
     el._assign = getModelAssigner(vnode)
     addEventListener(el, 'change', () => {
@@ -171,6 +173,8 @@ export const vModelRadio: ModelDirective<HTMLInputElement> = {
 }
 
 export const vModelSelect: ModelDirective<HTMLSelectElement> = {
+  // <select multiple> value need to be deep traversed
+  deep: true,
   created(el, { value, modifiers: { number } }, vnode) {
     const isSetModel = isSet(value)
     addEventListener(el, 'change', () => {