Refs #24148. Fix W-overloaded virtuals warning

qt/scientific_interfaces/Indirect/ConvFitModel.h

@@ -15,6 +15,8 @@ namespace IDA {
 
 class DLLExport ConvFitModel : public IndirectFittingModel {
 public:
+  using IndirectFittingModel::addWorkspace;
+
   ConvFitModel();
   ~ConvFitModel() override;
 

qt/scientific_interfaces/Indirect/JumpFitModel.h

@@ -22,6 +22,8 @@ struct JumpFitParameters {
 
 class DLLExport JumpFitModel : public IndirectFittingModel {
 public:
+  using IndirectFittingModel::addWorkspace;
+
   void addWorkspace(Mantid::API::MatrixWorkspace_sptr workspace,
                     const Spectra &) override;
   void removeWorkspace(std::size_t index) override;