[a11y] Keyboard navigation in security passcode view

[jesmrec]

Comes from #4438 (comment)

The passcode creation and unlocking views are not keyboard accessible.

TASKS

• Research (if needed)
• Create branch feature/keyboard_navigation_in_secutiry_passcode_view
• Development tasks
  • Implement whatever
• Code review and apply changes requested
• Design test plan
• QA
• Merge branch feature/feature_name into master