Fix VDisk replication stuck sensor bug (#6405)

Author: alexvru

ydb/core/blobstorage/vdisk/repl/blobstorage_repl.cpp

@@ -425,8 +425,8 @@ namespace NKikimr {
                     // no more blobs to replicate; replication will not resume
                     State = Finished;
                     ReplCtx->MonGroup.ReplUnreplicatedVDisks() = 0;
-                    ReplCtx->MonGroup.ReplUnreplicatedPhantoms() = 1;
-                    ReplCtx->MonGroup.ReplUnreplicatedNonPhantoms() = 1;
+                    ReplCtx->MonGroup.ReplUnreplicatedPhantoms() = 0;
+                    ReplCtx->MonGroup.ReplUnreplicatedNonPhantoms() = 0;
                     ReplCtx->MonGroup.ReplWorkUnitsRemaining() = 0;
                     ReplCtx->MonGroup.ReplWorkUnitsDone() = 0;
                     ReplCtx->MonGroup.ReplItemsRemaining() = 0;