What problem does this feature solve?

In the latest version (v6) tab navigation does not work for Picker components (DatePicker, TimePicker) and it breaks WCAG Success criteria 2.1.1, 2.1.3. Try to open https://ant.design/components/date-picker, navigate to DatePicker control using Tab and hit Enter, press Tab again and the focus is moved to the next DatePicker component though it should be moved to the opened DatePicker panel.

In v4 (https://4x.ant.design/components/date-picker/) it was partially handled but without focusing next/prev year/month buttons.

There were similar issues but they are not resolved yet:

• Select renders an input with blank value causing screenreader accessibility concerns #52987 (comment)
• DayPicker control - Month and year switching buttons are not accessible via keyboard and have no aria-labels #32513

What does the proposed API look like?

It should work like in other UI libraries:

• https://ui.shadcn.com/docs/components/radix/date-picker
• https://mui.com/x/react-date-pickers/date-picker/
• https://react-aria.adobe.com/DatePicker