By Dan Weil The homebuilder confidence index hit a seven-month low in April. Morningstar gives its take on two housing stocks. Much has been written about potential home buyers feeling discouraged — discouraged by rising home prices, by rising mortgage rates and by supply shortages. But homebuilders aren’t feeling so hot about the housing market either. “Rapidly rising interest rates combined with ongoing home price increases and higher construction costs continue to take a toll on builder confidence and housing affordability,” the National Association of Home Builders said in a statement. Th…