Fix date null/not null filter display
Fix date null/not null filter display

lukaswelte/metabase,jonasdiel/metabase-ptBR,Endika/metabase,zoowii/metabase,lukaswelte/metabase,dashkb/metabase,dashkb/metabase,blueoceanideas/metabase,zoowii/metabase,jonasdiel/metabase-ptBR,jonasdiel/metabase-ptBR,Endika/metabase,lukaswelte/metabase,Endika/metabase,zoowii/metabase,dashkb/metabase,blueoceanideas/metabase,zoowii/metabase,lukaswelte/metabase,Endika/metabase,blueoceanideas/metabase,jonasdiel/metabase-ptBR,jonasdiel/metabase-ptBR,zoowii/metabase,dashkb/metabase,blueoceanideas/metabase,blueoceanideas/metabase,Endika/metabase,dashkb/metabase,lukaswelte/metabase