#14476 ApplicationLibCode: Remove includes of cvfBase.h

cvfBase.h includes cvfAssert.h, so these six files were the last indirect route
into the assert header that the previous commit removed from ApplicationLibCode.

Five files dropped the include with no further change. RimSeismicAlphaMapper
declared alphaValue as returning cvf::ubyte, a typedef defined in cvfBase.h
itself, so no smaller VizFwk header provides it. Since cvf::ubyte is
unsigned char, use that directly in the declaration, the definition and the
cast. The type is identical, so callers are unaffected, and the class no longer
depends on VizFwk at all.

ApplicationLibCode/ModelVisualization/RivBoxGeometryGenerator.cpp

@@ -20,7 +20,6 @@
 
 #include "cafEffectGenerator.h"
 
-#include "cvfBase.h"
 #include "cvfDrawableGeo.h"
 #include "cvfPart.h"
 #include "cvfPrimitiveSetDirect.h"