return code to ProcessRequest(TWriteMsg) (ydb-platform#3696)

Author: Alek5andr-Kotov

ydb/core/persqueue/partition_write.cpp

@@ -943,7 +943,7 @@ TPartition::EProcessResult TPartition::ProcessRequest(TWriteMsg& p, ProcessParam
 
             sourceId.Update(THeartbeat{*hbVersion, p.Msg.Data});
 
-            return EProcessResult::Continue;
+            return EProcessResult::Reply;
         }
 
         if (poffset < curOffset) { //too small offset

ydb/core/tx/datashard/datashard_ut_change_exchange.cpp

@@ -3061,8 +3061,6 @@ Y_UNIT_TEST_SUITE(Cdc) {
     }
 
     Y_UNIT_TEST(ResolvedTimestamps) {
-        return;
-
         TPortManager portManager;
         TServer::TPtr server = new TServer(TServerSettings(portManager.GetPort(2134), {}, DefaultPQConfig())
             .SetUseRealThreads(false)
@@ -3187,8 +3185,6 @@ Y_UNIT_TEST_SUITE(Cdc) {
     }
 
     Y_UNIT_TEST(ResolvedTimestampsVolatileOutOfOrder) {
-        return;
-
         TPortManager portManager;
         TServer::TPtr server = new TServer(TServerSettings(portManager.GetPort(2134), {}, DefaultPQConfig())
             .SetUseRealThreads(false)