fix: 修复datetime-pick初始值不生效问题

packages/datetime-picker/index.js

@@ -1,3 +1,3 @@
-import DateTimePicker from './src/datetime-picker';
+import DatetimePicker from './src/datetime-picker';
 
-export default DateTimePicker;
+export default DatetimePicker;

packages/datetime-picker/src/datetime-picker.vue

@@ -285,6 +285,10 @@ export default {
       }
       [].forEach.call(this.$refs.picker.$children, child => child.doOnValueChange());
     }
+  },
+
+  mounted() {
+    this.updateColumnValue(this.innerValue);
   }
 };
 </script>