Qrep replication should be marked as completed when initialCopyOnly is true

[alon-zeltser-cyera]

In cdc_flow

	        // if initial_copy_only is opted for, we end the flow here.
		if cfg.InitialSnapshotOnly {
			logger.Info("initial snapshot only, ending flow")
			state.CurrentFlowStatus = protos.FlowStatus_STATUS_COMPLETED
			return state, nil

when initial load is completed the status is changed to STATUS_COMPLETED
but in qrep when initial_copy_only is true nowere is the status being marked as complete and there is no way of knowing it's finished

qrep_flow

		if config.InitialCopyOnly {
			q.logger.Info("initial copy completed for peer flow")
			return state, nil
		}

[saisrirampur]

cc @Amogh-Bharadwaj for visibility

[Amogh-Bharadwaj]

Thanks for flagging! Patching this in a PR here: #2532