fix(Date Picker): Automatically focus today or min date on open state.

[olehnoskov-cengage]

Closes: #2117

What I did

• Added automatic focus on today.
• Added automatic focus on min date.
• Pressing on the Today button forces focus on today.
• Refactor code, fix extra focus on the month wrapper.

Screenshots

Checklist

• [x] changeset has been added
• [x] Pull request is assigned, labels have been added and ticket is linked
• [x] Pull request description is descriptive and testing steps are listed
• [ ] Corresponding changes to the documentation have been made
• [x] New and existing unit tests pass locally with the proposed changes
• [x] Tests that prove the fix is effective or that the feature works have been added

How to test

Go to Storybook -> Date Picker -> Default -> open Calendar -> current day should be focused Go to Storybook -> Date Picker -> Default -> Open Calendar -> change the month or year -> click on the Today button -> the current day should be focused.

Go to Storybook -> Date Picker -> Default -> set min date like 11/11/2025 -> Open Calendar -> go to November -> min date should be focused Go to Storybook -> Date Picker -> Default -> type date like 11/11/2022 -> set min date like 11/11/2025 -> Open Calendar -> go to November -> chosen date should be focused but disabled.