DatePicker steals focus on dismiss

[abettadapur]

Bug Report

• Package version(s): latest
• Browser and OS versions: all

Priorities and help requested (not applicable if asking question):

Are you willing to submit a PR to fix? (Yes, No) No

Requested priority: (Blocking, High, Normal, Low) Normal

Describe the issue:

1. Have a form with multiple inputs
2. Open the datepicker calendar
3. Change your mind and move to edit another input on the form. Click that input
4. DatePicker calendar closes, but the DatePicker input is now focused, not the input I clicked

[abettadapur]

@lorejoh12 This seems like behavior that might have looked like a good idea, but is probably undesired

[abettadapur]

Introduced by Issue #1266

[lorejoh12]

This is definitely a bug, I'm working on fixing this hopefully this week or next week.