Starbucks devotees are already losing their beans over the coffee chain’s new holiday must-have — a bear-shaped cup so adorable, it’s got caffeine junkies clawing their way out of hibernation to “fight for” one. On November 6, the coffee giant is rolling out its long-awaited festive menu and holiday merch — and one $29.95 glass Starbucks Bearista Cold Cup is stealing the spotlight amid new coffee ornaments and wintry tumblers. The 20-ounce glass is shaped like a teddy bear rocking a cozy