fix: DH-21407: Dehydrate/hydrate pending data correctly (#2606)#2609

mofojed merged 1 commit intodeephaven:release/v0.85deephaven/web-client-ui:release/v0.85from

mofojed:DH-21407-v0.85-pending-datamofojed/web-client-ui:DH-21407-v0.85-pending-dataCopy head branch name to clipboard