fix: Cherry-pick DH-22093: Fix web UI freezing bug from grid-block-events#2647

vbabich merged 2 commits intodeephaven:release/v0.85deephaven/web-client-ui:release/v0.85from

vbabich:vlad_dh-22093-v0.85vbabich/web-client-ui:vlad_dh-22093-v0.85Copy head branch name to clipboard