Add option to use the old calendar/date picker without the confirmation step

As a user, I'm having issues when filling up issue data fields on Jira 9.5, it now has an additional step when selecting a date, making users spend more time on it and even not filling up these fields properly.

It would be good to have an option to remove this additional step, where you need to confirm the date and cannot just select the desired date with pointer or select and press enter on keyboards.

Comparing the behavior on different Jira versions using the keyboard:

1. Jira 8.20
   • Reach the date field with tab.
   • Just press down arrow key or press tab again to select the calendar icon, if so, press enter to effectively open the calendar.
   • Select the desired date and just press enter, it will automatically fill the field.

1. Jira 9.5
   • Reach the date field with tab.
   • Just press down arrow key or tab again to select the calendar icon, if so, press enter to effectively open the calendar.
   • Select the desired date
   • Press tab to reach the Confirm button and press enter to effectively fill the field.