fix: COMMIT & PUSH should hide when there's no remotes available (#956)

Signed-off-by: leo <longshuang@msn.cn>

src/ViewModels/Repository.cs

@@ -937,6 +937,9 @@ namespace SourceGit.ViewModels
                 CurrentBranch = branches.Find(x => x.IsCurrent);
                 LocalBranchTrees = builder.Locals;
                 RemoteBranchTrees = builder.Remotes;
+
+                if (_workingCopy != null)
+                    _workingCopy.HasRemotes = remotes.Count > 0;
             });
         }