Set prediction engine selector size correctly

source/RobotAPI/libraries/armem_gui/prediction_widget/PredictionWidget.cpp

@@ -55,6 +55,7 @@ namespace armarx::armem::gui
         vlayout->addLayout(timestampLayout);
 
         hlayout = new QHBoxLayout();
+        predictionEngineSelector->setSizeAdjustPolicy(QComboBox::AdjustToContents);
         hlayout->addWidget(new QLabel("Prediction engine"));
         hlayout->addWidget(predictionEngineSelector);
         hlayout->addStretch();