[vcs-log] do not close completion in go to hash popup when fully matched in multiple roots so user can select specific item from completion

platform/vcs-log/impl/src/com/intellij/vcs/log/ui/actions/GoToHashOrRefPopup.java

@@ -184,7 +184,8 @@ public class GoToHashOrRefPopup {
     @Nullable
     @Override
     protected String getTailText(@NotNull VcsRef item) {
-      return null;
+      if (!myColorManager.isMultipleRoots()) return null;
+      return "";
     }
 
     @Nullable