refactor(select-menu): declare mirror prop explicitly

packages/base/SelectMenu/src/SelectMenu.vue

@@ -7,7 +7,7 @@
       [`n-${theme}-theme`]: theme
     }"
     :style="{
-      width: width &&(width + 'px')
+      width: width && (width + 'px')
     }"
     @keyup.up.stop="handleKeyUpUp"
     @keyup.down.stop="handleKeyUpDown"
@@ -143,7 +143,7 @@ export default {
     },
     mirror: {
       type: Boolean,
-      default: true
+      required: true
     },
     autoPendingFirstOption: {
       type: Boolean,

packages/common/AutoComplete/src/main.vue

@@ -24,6 +24,7 @@
             ref="contentInner"
             auto-pending-first-option
             class="n-select-menu"
+            :mirror="false"
             :theme="synthesizedTheme"
             :pattern="value"
             :options="filteredOptions"

packages/common/Dropdown/src/DropdownMenu.vue

@@ -199,7 +199,8 @@ export default {
           isSelected: () => false,
           options: this.options,
           size: this.size,
-          theme: this.synthesizedTheme
+          theme: this.synthesizedTheme,
+          mirror: true
         }
       }, options)
     ])

packages/common/Select/src/Select.vue

@@ -32,7 +32,6 @@
       :remote="remote"
       :clearable="clearable"
       :disabled="disabled"
-      :on-search="onSearch"
       :size="size"
       :theme="synthesizedTheme"
       @click="handleActivatorClick"