Fixed calendar switch a month with the latest enabled dates

[imblowfish]

Closes #157

New test has been added #186

I tried to fully fix the problem with auto-switching to the latest selected dates, but I cannot achieve this due to this behavior in the ion-datetime https://ionicframework.com/docs/api/datetime#setting-values-asynchronously:

If its value is updated programmatically after a datetime has already been created, the datetime will automatically jump to the new date. However, it is recommended to avoid updating the value in this way when users are able to interact with the datetime, as this could be disorienting for those currently trying to select a date. For example, if a datetime's value is loaded by an asynchronous process, it is recommended to hide the datetime with CSS until the value has finished updating.

As you can read, datetime automatically jump to the selected date, so I decided to fix at least the most annoying problem

Let's imagine that we selected the following dates in the Edit mode:

Let's click on Save and we should see something like that:

But when we click on Edit again our date will be automatically switched at the begin of the latest active dates

I was able to fix that by tricking ion-datetime. For this I called Array's reverse function on the lastPeriodDays array and pass it as value prop to the ion datetime. In this case ion-datetime jumps to the month in which we have the last day of range, believing that this is the beginning of the range, but in fact this is the end of the range

With this fix, the situation described above will looks like this:

Click on Edit:

On the other side, this hack still not fix the following behavior and I don't think that we can do that without ion datetime's code modifications
Selected dates:

Click on Save:

Click on Edit again:

But, in my opinion, this behavior is more obvious and logical, because in any case the ion datetime is jump to the last month, where the last selected day is located

[imblowfish]

@IraSoro I don't have rights to modify https://github.com/users/IraSoro/projects/7/views/1 project
Could you please give me the rights or add this test to the project by yourself? #186

[imblowfish]

When I worker on #153 I cherry-picked changes from this commit. And, #153 was merged earlier than this commit. So. looks like we can close this PR and issue as already fixed with #153