PD: Attempt to translate exceptions in dialogs

Relies on the exception text having been added to the translation database in a previous call to QT_TRANSLATE_NOOP, and put in the 'Exception' context.

src/Mod/PartDesign/Gui/TaskPipeParameters.cpp

@@ -518,7 +518,7 @@ bool TaskPipeParameters::accept()
         }
     }
     catch (const Base::Exception& e) {
-        QMessageBox::warning(this, tr("Input error"), QString::fromUtf8(e.what()));
+        QMessageBox::warning(this, tr("Input error"), QApplication::translate("Exception", e.what()));
         return false;
     }