Allow empty selection for year_picker_selection, just like there is for month_picker_selection

[jalvespinto]

I see that for the months selection it is ok to have an empty selection, but I get an error if no year is selected for the 'years' page. Also, it would be nice to have the current year highlighted, like there is for 'months' page.

[MariaMelnik]

thank you for the opening issue! I agree this functionality should be available for year picker too. Will add soon

[champ96k]

Hey @MariaMelnik,

looks good to me! can you please assign me? Thanks

[MariaMelnik]

@champ96k hi, feel free to do it and open PR.