[POS][Local Catalog] Ensure we only run one sync at a time per site#16100

joshheald merged 3 commits intotrunkwoocommerce/woocommerce-ios:trunkfrom

woomob-1252-ensure-only-one-sync-at-a-time-per-sitewoocommerce/woocommerce-ios:woomob-1252-ensure-only-one-sync-at-a-time-per-siteCopy head branch name to clipboard