emit currentIndexChanged onDataChanged

Because this effects that the data related to the combobox (emedded forms) got updated. they update because of an index change, but needed to be updated even when the index does not change (but the data). This goes over the same canal here.

src/gui/editorwidgets/qgsrelationreferencewidget.cpp

@@ -556,8 +556,6 @@ void QgsRelationReferenceWidget::init()
     // Only connect after iterating, to have only one iterator on the referenced table at once
     connect( mComboBox, static_cast<void ( QComboBox::* )( int )>( &QComboBox::currentIndexChanged ), this, &QgsRelationReferenceWidget::comboReferenceChanged );
 
-    mReferencedLayer->getFeatures( mComboBox->currentFeatureRequest() ).nextFeature( mFeature );
-    highlightFeature( mFeature );
     updateAttributeEditorFrame( mFeature );
     QApplication::restoreOverrideCursor();
   }

src/gui/qgsfeaturelistcombobox.cpp

@@ -160,6 +160,7 @@ void QgsFeatureListComboBox::onDataChanged( const QModelIndex &topLeft, const QM
       QModelIndex modelIndex = mModel->index( currentIndex, 0, QModelIndex() );
       mLineEdit->setText( mModel->data( modelIndex, QgsFeatureFilterModel::ValueRole ).toString() );
     }
+    emit currentIndexChanged( currentIndex );
   }
 }