The Miami Heat‘s offseason ambitions appear to extend far beyond a singular pursuit of Giannis Antetokounmpo.Even as team president Pat Riley continues searching for a trade package capable of landing the two-time MVP, a new report surfaced indicating the Heat have begun identifying alternative star targets should their long-running chase for Antetokounmpo ultimately come up empty.According to NBA insider Jake Fischer of The Stein Line, Washingt…