Revert "Reland "Roll Engine from 6993cb229b99 to c217d9d06e4f (60 revisions) (#76352)" (#76394)" (#76403)

This reverts commit 562f53bf.

This reverts commit c310717a.

Also update Gallery to a version that is compatible with this roll.

Added the ability to bring up the date picker dialogs in calendar or text input only modes that don't allow the user to switch. (#76343)

This reverts commit bb3e64da.