[DO NOT MERGE] Blagoev/perf 6348 port tpcc postgress jsonb#29

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blagoev wants to merge 14 commits intoPERF-6240from

blagoev/PERF-6348-port-tpcc-postgress-jsonb

Commits on Mar 18, 2025

Commits on Mar 21, 2025

fix a bug in updateBCCustomer JSONB query
blagoev
committed

Commits on Apr 10, 2025

fix unique constraint error when creating New Orders.
blagoev
committed

Commits on Apr 15, 2025

fix loader hanging when operaiton is multiple hours long
blagoev
committed