Revert "KIKIMR-20842: make error non-retryable again"

This reverts commit 46ca396.

Author: eivanov89

ydb/core/kqp/executer_actor/kqp_data_executer.cpp

@@ -1271,6 +1271,11 @@ class TKqpDataExecuter : public TKqpExecuterBase<TKqpDataExecuter, EExecType::Da
                 LOG_N("Shard " << msg->TabletId << " lost pipe while waiting for reply"
                     << (msg->NotDelivered ? " (last message not delivered)" : ""));
 
+                if (ReadOnlyTx && msg->NotDelivered) {
+                    CancelProposal(msg->TabletId);
+                    return ReplyUnavailable(TStringBuilder() << "Could not deliver program to shard " << msg->TabletId);
+                }
+
                 return ReplyTxStateUnknown(msg->TabletId);
             }