[META]: Datepicker + searchbar + EUI work left for K7

[snide]

This is a summary that lists all the steps needed for the date picker + searchbar to work in the K7 styling:

• @nreese EuiSuperDatePicker needs props to not show refresh button and pass dates to parent component [EuiSuperDatePicker] add showApplyButton prop eui#1399
• @nreese / @cchaos EuiSuperDatePicker needs props to allow for refresh only mechanic when datetime isn't available
• @Bargs Kibana filter bar needs to be merged Migrate filter bar to React, EUI, and Typescript  #25563
• @Bargs / @nreese EuiSuperDatePicker needs to be moved into the Kibana search/filter bar
  • Maps using the date picker [Maps] use EuiSuperDatePicker in QueryBar instead of Angular timepicker in Top Nav #29235
  • Replace angular timepicker with EuiSuperDatePicker Replace angular timepicker with EuiSuperDatePicker #29204
  • Discover / Viz / Dashboards needs to move the picker next to the search bar Migrate Discover, Visualize, and Dashboard apps to date picker in QueryBar #29674
• @snide @cchaos Design cleanup for all variations in the various headers Prepare local nav styles for K7 #29457

cc @rayafratkina for visibility

[elasticmachine]

Pinging @elastic/kibana-app

[elasticmachine]

Pinging @elastic/kibana-design

[nreese]

Work getting put into feature branch feature/global-date-picker

[snide]

I updated this ticket to include a more granular breakdown of what's left.

[snide]

Forgot to close this. Hooray!