Given the emotion joy and the tweet "@RoryPlays_  I was so busy yesterday I forgot to wish u a happy birthday so here I got HAPPY BELATED BIRTHDAY I hope u had a wonderful day", 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.