Move spacewatcher to CS mailbox (#18799)

Author: XJIE6

ydb/core/tx/columnshard/columnshard.cpp

@@ -119,6 +119,7 @@ void TColumnShard::OnActivateExecutor(const TActorContext& ctx) {
 
     AFL_INFO(NKikimrServices::TX_COLUMNSHARD)("event", "initialize_shard")("step", "initialize_tiring_finished");
     auto& icb = *AppData(ctx)->Icb;
+    SpaceWatcherId = RegisterWithSameMailbox(SpaceWatcher);
     Limits.RegisterControls(icb);
     Settings.RegisterControls(icb);
     ResourceSubscribeActor = ctx.Register(new NOlap::NResourceBroker::NSubscribe::TActor(TabletID(), SelfId()));

ydb/core/tx/columnshard/columnshard_impl.cpp

@@ -98,7 +98,6 @@ TColumnShard::TColumnShard(TTabletStorageInfo* info, const TActorId& tablet)
     , SysLocks(this) {
     AFL_VERIFY(TabletActivityImpl->Inc() == 1);
     SpaceWatcher = new TSpaceWatcher(this);
-    SpaceWatcherId = TActorContext::AsActorContext().Register(SpaceWatcher);
 }
 
 void TColumnShard::OnDetach(const TActorContext& ctx) {
@@ -1438,7 +1437,7 @@ class TTxAskPortionChunks: public TTransactionBase<TColumnShard> {
 
     bool Execute(TTransactionContext& txc, const TActorContext& /*ctx*/) override {
         NIceDb::TNiceDb db(txc.DB);
-        
+
         TBlobGroupSelector selector(Self->Info());
         bool reask = false;
         NActors::TLogContextGuard lGuard = NActors::TLogContextBuilder::Build()("event", "TTxAskPortionChunks::Execute");