#8103 Ensemble Well Logs: Index_K not available as property for geogrid

Made "Index K" available for grdecl, fixed crash, and disabled the depth
equalization when "Index K" is missing in the las files.

Fixes #8103.

ApplicationLibCode/ProjectDataModel/RimEclipseInputCase.cpp

@@ -179,6 +179,8 @@ bool RimEclipseInputCase::openDataFileSet( const QStringList& fileNames )
         this->ensureFaultDataIsComputed();
     }
 
+    results( RiaDefines::PorosityModelType::MATRIX_MODEL )->createPlaceholderResultEntries();
+
     return true;
 }