fix(components): fix iOS select click event listening

iOS Safari does not handle click events when a mouseenter event is registered and a DOM-change
happens in a child. We use a Vue custom event binding to only register the event on non-iOS devices.
The inputHovering state gets updated now on iOS-devices on click. This is needed as the mouseenter
event normally does this.

closed element-plus#5210

packages/components/select/src/select.vue

@@ -3,7 +3,7 @@
     ref="selectRef"
     v-click-outside:[popperRef]="handleClickOutside"
     :class="[nsSelect.b(), nsSelect.m(selectSize)]"
-    @mouseenter="states.inputHovering = true"
+    @[mouseEnterEventName]="states.inputHovering = true"
     @mouseleave="states.inputHovering = false"
     @click.prevent.stop="toggleMenu"
   >

packages/components/select/src/useSelect.ts

@@ -28,6 +28,7 @@ import {
   debugWarn,
   isClient,
   isFunction,
+  isIOS,
   isNumber,
   isUndefined,
   scrollIntoView,
@@ -253,6 +254,12 @@ export const useSelect = (props: ISelectProps, emit) => {
       : states.selectedLabel
   })
 
+  // iOS Safari does not handle click events when a mouseenter event is registered and a DOM-change happens in a child
+  // We use a Vue custom event binding to only register the event on non-iOS devices
+  // ref.: https://developer.apple.com/library/archive/documentation/AppleApplications/Reference/SafariWebContent/HandlingEvents/HandlingEvents.html
+  // Github Issue: https://github.com/vuejs/vue/issues/9859
+  const mouseEnterEventName = computed(() => (isIOS ? null : 'mouseenter'))
+
   watch(
     () => props.modelValue,
     (val, oldVal) => {
@@ -670,6 +677,10 @@ export const useSelect = (props: ISelectProps, emit) => {
   const toggleMenu = () => {
     if (selectDisabled.value) return
 
+    // We only set the inputHovering state to true on mouseenter event on iOS devices
+    // To keep the state updated we set it here to true
+    if (isIOS) states.inputHovering = true
+
     if (states.menuVisibleOnFocus) {
       // controlled by automaticDropdown
       states.menuVisibleOnFocus = false
@@ -814,6 +825,7 @@ export const useSelect = (props: ISelectProps, emit) => {
     hasModelValue,
     shouldShowPlaceholder,
     currentPlaceholder,
+    mouseEnterEventName,
     showClose,
     iconComponent,
     iconReverse,