T1969: Enable it again but bump the max residency temporarily
T1969: Enable it again but bump the max residency temporarily

T1969 was broken by 714beb (which actually reduced allocations but
residency was increased). Instead of disabling it completely, just bump
the number a little bit to avoid making things even worse in the
meantime. See also #12437.

olsner/ghc,olsner/ghc,sdiehl/ghc,sdiehl/ghc,snoyberg/ghc,olsner/ghc,sdiehl/ghc,snoyberg/ghc,snoyberg/ghc,mettekou/ghc,ezyang/ghc,shlevy/ghc,ezyang/ghc,mettekou/ghc,sdiehl/ghc,ezyang/ghc,olsner/ghc,ezyang/ghc,shlevy/ghc,shlevy/ghc,snoyberg/ghc,snoyberg/ghc,sdiehl/ghc,olsner/ghc,mettekou/ghc,olsner/ghc,ezyang/ghc,shlevy/ghc,shlevy/ghc,mettekou/ghc,mettekou/ghc,shlevy/ghc,mettekou/ghc,ezyang/ghc,shlevy/ghc,sdiehl/ghc,snoyberg/ghc,mettekou/ghc,sdiehl/ghc,snoyberg/ghc,olsner/ghc,ezyang/ghc