Code Quality: Improved Omnibar 4

[0x5bfa]

Resolved / Related Issues

• #16029
• [x] Switching tabs while focused on the Omnibar causes a crash
• [ ] Tab navigation isn't properly focusing on the Breadcrumb Bar
• [ ] Mode icons aren't updating when switching themes
• [ ] On a fresh start, focusing on the Path Mode textbox doesn't open the suggestion flyout

Steps used to test these changes

Coming soon.