message: [improvement] Search: add left-icon slot
diff: :value="value"
  :border="false"
  left-icon="search"
  - />
  + >
  + <slot name="left-icon" slot="left-icon" />
  + </field>
  <div v-if="showAction" :class="b('action')">
  <slot name="action">
  <div @click="onBack">{{ $t('cancel') }}</div>
  