Support for pickerValue (similar to defaultPickerValue)

[randdusing]

Howdy,

It would be nice if the displayed month could be better controlled to prevent situations like below when using the range picker:

1. Assume the start and end dates are currently 2021-01-01
2. Open picker to select start date
3. Click previous month 12 times
4. Select 2020-01-01
5. My code sets defaultPickerValue to [2020-01-01, 2020-01-01]
6. Panel now "focuses" back to 2021-01-01 for choosing the start date

Now I have click previous month 12 times again to select 2020-01-01 as the end date too

Similar issue was logged in Ant Design: https://github.com/ant-design/ant-design/issues/15360