fix：修复 embed 模式下 input-date-range 无法使用问题 (#3875)

* fix：修复 embed 模式下 input-date-range 无法使用问题

* 更新 snapshot

__tests__/renderers/Form/__snapshots__/dateRange.test.tsx.snap

@@ -58,7 +58,7 @@ exports[`Renderer:dateRange 1`] = `
             >
               <input
                 autocomplete="off"
-                class="cxd-DateRangePicker-input"
+                class="cxd-DateRangePicker-input isActive"
                 placeholder="选择开始时间"
                 type="text"
                 value="2019-06-06"

src/components/DateRangePicker.tsx

@@ -518,6 +518,7 @@ export class DateRangePicker extends React.Component<
     this.state = {
       isOpened: false,
       isFocused: false,
+      editState: 'start',
       startDate,
       endDate,
       startInputValue: startDate?.format(inputFormat),