[AST] Fix declaration bitfields. (#33567)
[AST] Fix declaration bitfields. (#33567)

Fix total bit count for Decl and AbstractFunctionDecl bitfields.
tkremenek/swift,atrick/swift,tkremenek/swift,JGiola/swift,benlangmuir/swift,jmgc/swift,tkremenek/swift,xwu/swift,roambotics/swift,atrick/swift,hooman/swift,gregomni/swift,parkera/swift,parkera/swift,hooman/swift,tkremenek/swift,nathawes/swift,parkera/swift,ahoppen/swift,hooman/swift,roambotics/swift,apple/swift,CodaFi/swift,CodaFi/swift,rudkx/swift,xwu/swift,JGiola/swift,benlangmuir/swift,parkera/swift,ahoppen/swift,apple/swift,JGiola/swift,parkera/swift,atrick/swift,atrick/swift,roambotics/swift,jmgc/swift,CodaFi/swift,roambotics/swift,JGiola/swift,xwu/swift,jmgc/swift,jmgc/swift,benlangmuir/swift,parkera/swift,nathawes/swift,gregomni/swift,tkremenek/swift,apple/swift,nathawes/swift,hooman/swift,parkera/swift,hooman/swift,apple/swift,glessard/swift,gregomni/swift,benlangmuir/swift,glessard/swift,nathawes/swift,CodaFi/swift,jmgc/swift,ahoppen/swift,atrick/swift,glessard/swift,roambotics/swift,apple/swift,gregomni/swift,CodaFi/swift,ahoppen/swift,JGiola/swift,atrick/swift,hooman/swift,xwu/swift,gregomni/swift,rudkx/swift,ahoppen/swift,rudkx/swift,apple/swift,ahoppen/swift,xwu/swift,rudkx/swift,nathawes/swift,tkremenek/swift,hooman/swift,CodaFi/swift,JGiola/swift,glessard/swift,xwu/swift,nathawes/swift,rudkx/swift,gregomni/swift,CodaFi/swift,benlangmuir/swift,parkera/swift,xwu/swift,roambotics/swift,glessard/swift,benlangmuir/swift,tkremenek/swift,nathawes/swift,jmgc/swift,jmgc/swift,glessard/swift,rudkx/swift