testsuite: Mark T14761c as broken in hpc, profasm, and optasm ways
testsuite: Mark T14761c as broken in hpc, profasm, and optasm ways

As noted in #16540.

sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc