doc: select add searchValue, #5236

Author: tangjinzhou

components/select/index.en-US.md

@@ -47,6 +47,7 @@ Select component to select value from options.
 | optionFilterProp | Which prop value of option will be used for filter if filterOption is true | string | value |  |
 | optionLabelProp | Which prop value of option will render as content of select. | string | `children` \| `label`(when use options) |  |
 | placeholder | Placeholder of select | string\|slot | - |  |
+| searchValue | The current input "search" text | string | - |  |
 | showSearch | Whether show search input in single mode. | boolean | false |  |
 | showArrow | Whether to show the drop-down arrow | boolean | true |  |
 | size | Size of Select input. `default` `large` `small` | string | default |  |

components/select/index.zh-CN.md

@@ -48,6 +48,7 @@ cover: https://gw.alipayobjects.com/zos/alicdn/_0XzgOis7/Select.svg
 | optionFilterProp | 搜索时过滤对应的 option 属性，不支持 children | string | value |  |
 | optionLabelProp | 回填到选择框的 Option 的属性值，默认是 Option 的子元素。比如在子元素需要高亮效果时，此值可以设为 `value`。 | string | `children` \| `label`(设置 options 时) |  |
 | placeholder | 选择框默认文字 | string\|slot | - |  |
+| searchValue | 控制搜索文本 | string | - |  |
 | showSearch | 使单选模式可搜索 | boolean | false |  |
 | showArrow | 是否显示下拉小箭头 | boolean | true |  |
 | size | 选择框大小，可选 `large` `small` | string | default |  |