Breakpoint CostCenters are looked up in the wrong array

In GHC.StgToByteCode.schemeER_wrk:

  case break_info hsc_env mod current_mod current_mod_breaks of
    Nothing -> pure code
    Just ModBreaks {modBreaks_flags = breaks, modBreaks_module = mod_ptr} -> do
      cc_arr <- getCCArray
      ...
      = cc_arr ! tick_no

cc_arr is the cost center array for the current module, we should be looking in modBreaks_ccs

This came up when trying to load Agda into a profiled GHCi session. I can try to produce a smaller reproducer.

/cc @torsten.schmits who introduced cross module breakpoints in !10448 (merged)