fix: 🤔 datepicker selected state

[auroraVasconcelos]

Current behavior

When the datepicker is open one day needs to be on focus.
Current this focus state is the same as in hover for range and the selected state if not range variant.

Other libraries don't allow keyboard navigation inside the calendar.

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Technical Information

DoR

• Item has business value
• Item has been estimated by the team
• Item is clear and well-defined
• Item dependencies have been identified