Do not strictify a DFun's parameter dictionaries (#22549)
... thus fixing #22549. The details are in the refurbished and no longer dead `Note [Do not strictify a DFun's parameter dictionaries]`. There's a regression test in T22549.
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- compiler/GHC/Core/Opt/DmdAnal.hs 62 additions, 38 deletionscompiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/CoreToStg/Prep.hs 4 additions, 0 deletionscompiler/GHC/CoreToStg/Prep.hs
- testsuite/tests/stranal/should_run/T22549.hs 37 additions, 0 deletionstestsuite/tests/stranal/should_run/T22549.hs
- testsuite/tests/stranal/should_run/T22549.stdout 1 addition, 0 deletionstestsuite/tests/stranal/should_run/T22549.stdout
- testsuite/tests/stranal/should_run/all.T 2 additions, 0 deletionstestsuite/tests/stranal/should_run/all.T
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