loop and repeat not properly self-sinking
loop and repeat not properly self-sinking

Loops at statementlist level should be self-sinking by default.
The loop and repeat forms of loop were not doing this correctly.
Fixes RT #127563 and RT #128596.

softmoth/rakudo,MasterDuke17/rakudo,softmoth/rakudo,usev6/rakudo,lucasbuchala/rakudo,labster/rakudo,awwaiid/rakudo,raydiak/rakudo,awwaiid/rakudo,salortiz/rakudo,jonathanstowe/rakudo,sjn/rakudo,labster/rakudo,usev6/rakudo,samcv/rakudo,usev6/rakudo,lucasbuchala/rakudo,jonathanstowe/rakudo,samcv/rakudo,nbrown/rakudo,tbrowder/rakudo,MasterDuke17/rakudo,zostay/rakudo,rakudo/rakudo,nbrown/rakudo,usev6/rakudo,sjn/rakudo,sjn/rakudo,nbrown/rakudo,usev6/rakudo,salortiz/rakudo,rakudo/rakudo,tony-o/rakudo,nbrown/rakudo,tbrowder/rakudo,Gnouc/rakudo,nbrown/rakudo,tony-o/rakudo,samcv/rakudo,zostay/rakudo,Gnouc/rakudo,softmoth/rakudo,raydiak/rakudo,tony-o/rakudo,tony-o/rakudo,rakudo/rakudo,Gnouc/rakudo,jonathanstowe/rakudo,tony-o/rakudo,lucasbuchala/rakudo,MasterDuke17/rakudo,zostay/rakudo,sjn/rakudo,jonathanstowe/rakudo,softmoth/rakudo,salortiz/rakudo,lucasbuchala/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,awwaiid/rakudo,tbrowder/rakudo,tbrowder/rakudo,rakudo/rakudo,labster/rakudo,softmoth/rakudo,tony-o/rakudo,MasterDuke17/rakudo,Gnouc/rakudo,Gnouc/rakudo,nbrown/rakudo,raydiak/rakudo,lucasbuchala/rakudo,salortiz/rakudo,labster/rakudo,raydiak/rakudo,awwaiid/rakudo,rakudo/rakudo,sjn/rakudo,awwaiid/rakudo,salortiz/rakudo,labster/rakudo,rakudo/rakudo,zostay/rakudo,samcv/rakudo,samcv/rakudo,jonathanstowe/rakudo,labster/rakudo,Gnouc/rakudo,MasterDuke17/rakudo,tbrowder/rakudo,salortiz/rakudo