no longer lose operator profile selection when making other changes to a node

lib/widgets/add_node_sheet.dart

@@ -448,6 +448,7 @@ class _AddNodeSheetState extends State<AddNodeSheet> {
               operatorProfile: result.operatorProfile,
               refinedTags: result.refinedTags,
               changesetComment: result.changesetComment,
+              updateOperatorProfile: true,
             );
           }
         }

lib/widgets/edit_node_sheet.dart

@@ -503,6 +503,7 @@ class _EditNodeSheetState extends State<EditNodeSheet> {
               refinedTags: result.refinedTags,
               additionalExistingTags: result.additionalExistingTags,
               changesetComment: result.changesetComment,
+              updateOperatorProfile: true,
             );
           }
         }