Fix missing signal/slot connection resulting in non-woring autocompleter for value relation fields (fixes #16676).

This oneliner introduces the missing signal/slot connection, and fixes the bug.

Author: Frank Dekervel

src/gui/editorwidgets/qgsvaluerelationwidgetwrapper.cpp

@@ -137,6 +137,8 @@ void QgsValueRelationWidgetWrapper::initWidget( QWidget *editor )
     QCompleter *completer = new QCompleter( m, mLineEdit );
     completer->setCaseSensitivity( Qt::CaseInsensitive );
     mLineEdit->setCompleter( completer );
+
+    connect( mLineEdit, &QLineEdit::textChanged, this, static_cast<void ( QgsEditorWidgetWrapper::* )()>( &QgsEditorWidgetWrapper::valueChanged ) );
   }
 }