Save Raster Layer as: do not propose PDF as possible format, which is…

… not supported

The PDF driver only supports 'random' creation for vectors, not raster.
For raster, it only supports CreateCopy() mode

Refs #58891

src/core/qgsgdalutils.cpp

@@ -162,7 +162,8 @@ QList<QgsGdalOption> QgsGdalOption::optionsFromXml( const CPLXMLNode *node )
 bool QgsGdalUtils::supportsRasterCreate( GDALDriverH driver )
 {
   const QString driverShortName = GDALGetDriverShortName( driver );
-  if ( driverShortName == QLatin1String( "SQLite" ) )
+  if ( driverShortName == QLatin1String( "SQLite" ) ||
+       driverShortName == QLatin1String( "PDF" ) )
   {
     // it supports Create() but only for vector side
     return false;