fix: prevent thread resume crash from null metadata and icon (fixes #2827)#2830

Closed

giulio-leone wants to merge 2 commits intoChainlit:mainfrom

giulio-leone:fix/thread-resume-null-checks-2827

Commits on Mar 7, 2026

fix: prevent thread resume crash from null icon property
giulio-leone
committed

Commits on Mar 8, 2026

fix: preserve existing metadata in update_thread when not provided
giulio-leone
committed