Given the emotion joy and the tweet "Happy Birthday to #Olympic #great and #champ @jordyn_wieber 🎉 🎂 🎈", classify the intensity of the emotion displayed in the tweet. The classification options are: 0: no joy can be inferred, 1: low amount of joy can be inferred, 2: moderate amount of joy can be inferred, 3: high amount of joy can be inferred.