Bug report: Disabled date functionality not working correctly with default dates

[matjaz321]

Steps to reproduce the problem

• Open this link: https://codesandbox.io/s/vue-datepicker-demo-forked-6y2kt
• You will see two datepickers (from and to), by default both of the datepickers will have date of today.
• From datepicker will have disabled dates are in the future (so date > today)
• To datepicker will have disabled dates that are in the past (date < today)
• Open the from datepicker and you will see that todays date is disabled you cant click it
• Now open the from datepicker and select the same date
• Now go to the to datepicker and open it and you will see that you can select todays date

(You can see in this image that 13th is disabled...)