fix Formula type annotation, it doesn't show up since #4630 (#5181)
fix Formula type annotation, it doesn't show up since #4630 (#5181)


dmigo/incubator-superset,apache/incubator-superset,apache/incubator-superset,airbnb/superset,timifasubaa/incubator-superset,airbnb/caravel,zhouyao1994/incubator-superset,airbnb/superset,timifasubaa/incubator-superset,airbnb/superset,apache/incubator-superset,airbnb/superset,zhouyao1994/incubator-superset,timifasubaa/incubator-superset,dmigo/incubator-superset,mistercrunch/panoramix,zhouyao1994/incubator-superset,dmigo/incubator-superset,dmigo/incubator-superset,zhouyao1994/incubator-superset,apache/incubator-superset,mistercrunch/panoramix,airbnb/caravel,airbnb/caravel,zhouyao1994/incubator-superset,timifasubaa/incubator-superset,apache/incubator-superset,mistercrunch/panoramix,mistercrunch/panoramix,airbnb/caravel