Combobox optimizations#2861

Draft

charliepark wants to merge 10 commits intomainfrom

combobox-optimizations

Commits on May 20, 2025

Commits on May 22, 2025

Fix issues raised by CI pipeline
septum
committed

Commits on May 23, 2025

Fix issues stated in code review
septum
committed

Commits on May 29, 2025

Revert changes in placeholders
septum
committed

Commits on Jul 22, 2025

Commits on Jul 23, 2025

add mock images and stress test combobox; memoize as much as possible
charliepark
committed
More memoizations and attempts to speed up Chrome rendering for large lists
charliepark
committed

Commits on Jul 24, 2025

virtualize long combobox lists
charliepark
committed