#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/ProjectDataModel/Annotations/RimPolylinesFromFileAnnotation.cpp

@@ -21,6 +21,7 @@
 #include "RiaLogging.h"
 #include "RiaTextStringTools.h"
 #include "RigPolyLinesData.h"
+#include "RiuMessageDialog.h"
 
 #include "RimAnnotationCollection.h"
 #include "RimAnnotationLineAppearance.h"
@@ -207,7 +208,7 @@ void RimPolylinesFromFileAnnotation::fieldChangedByUi( const caf::PdmFieldHandle
         if ( !errorMessage.isEmpty() )
         {
             QString totalError = "\nError in: " + fileName() + "\n\t" + errorMessage;
-            RiaLogging::errorInMessageBox( nullptr, "Import Polylines", totalError );
+            RiuMessageDialog::showError( nullptr, "Import Polylines", totalError );
         }
     }
     else if ( changedField == &m_showLines )