fix(date-picker): KB nav and calendar focus handling

[damyanpetev]

Closes #14918

Additional information (check all that apply):

• Bug fix
• New functionality
• Documentation
• Demos
• CI/CD

Checklist:

• All relevant tags have been applied to this PR
• This PR includes unit tests covering all the new code (test guidelines)
• This PR includes API docs for newly added methods/properties (api docs guidelines)
• This PR includes feature/README.MD updates for the feature docs
• This PR includes general feature table updates in the root README.MD
• This PR includes CHANGELOG.MD updates for newly added functionality
• This PR contains breaking changes
• This PR includes ng update migrations for the breaking changes (migrations guidelines)
• This PR includes behavioral changes and the feature specification has been updated with them

[gedinakova]

@damyanpetev Query Builder/ Advanced filtering
Not sure if this is the same issue, but if after opening the picker, no value is selected but rather press Escape or click outside, the focus shifts to the parent component.
Works fine in the time picker, though and in the filter row.
screen-capture (1).webm

[damyanpetev]

@damyanpetev Query Builder/ Advanced filtering Not sure if this is the same issue, but if after opening the picker, no value is selected but rather press Escape or click outside, the focus shifts to the parent component. Works fine in the time picker, though and in the filter row. screen-capture (1).webm

@gedinakova Can only assume the keystrokes in the recording, but can't really reproduce and guessing you didn't hit Enter to actually select something, just navigated around. At least it works when I try it.

[gedinakova]

@damyanpetev

1. In query builder demo, start a condition for Date Created field
2. Select a filter, click to open the date picker
3. Press "Esc" and check the focus

Expected result: The focus to be returned to the input.
Actual result: The focus is shifted to the body.

[damyanpetev]

@damyanpetev

1. In query builder demo, start a condition for Date Created field
2. Select a filter, click to open the date picker
3. Press "Esc" and check the focus

Expected result: The focus to be returned to the input. Actual result: The focus is shifted to the body.

Hey, that's another one 🥴 However, looking at the code, that's not related to the calendar refactor anymore, actually not sure how it could've worked before at all. Will see if there's an easy fix.