#13126 RiaLogging: Extract errorInMessageBox to RiuMessageDialog

Move the QMessageBox-displaying helper out of the logging utility into a
dedicated UI class. RiaLogging.h no longer pulls QMessageBox/QWidget into
the ~270 files that include it. Behavior is preserved: showError displays
the dialog when running interactively (and not under regression tests),
then forwards the text to RiaLogging::error.

ApplicationLibCode/Commands/RicReloadFormationNamesFeature.cpp

@@ -19,6 +19,7 @@
 #include "RicReloadFormationNamesFeature.h"
 
 #include "RiaLogging.h"
+#include "RiuMessageDialog.h"
 
 #include "Formations/RimFormationNames.h"
 #include "Formations/RimFormationNamesCollection.h"
@@ -64,7 +65,7 @@ void RicReloadFormationNamesFeature::onActionTriggered( bool isChecked )
         fnames->readFormationNamesFile( &errorMessage );
         if ( !errorMessage.isEmpty() )
         {
-            RiaLogging::errorInMessageBox( nullptr, "Reload Formation Names", errorMessage );
+            RiuMessageDialog::showError( nullptr, "Reload Formation Names", errorMessage );
         }
 
         fnames->updateConnectedViews();