fix(Cabal, cabal-install): default debug-info level to NoDebugInfo

[zlonast]

In some cases we will display the wrong debug level flag.

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[jappeace]

Why change the default debug info?

The current default says it's "Normal", which I guess is different from "No" debug info.

[zlonast]

@jappeace Currently, this is only available for Haskell files generated via cabal-hooks. (that why i change flagToDebugInfoLevel) and there is another case when the saved package does not have this field in its config (this is simply an impossible situation at the moment, we always define a default field and write it)

Others use it:

cabal setup

defaultConfigFlags :: ProgramDb -> ConfigFlags
defaultConfigFlags progDb =
  emptyConfigFlags
    { ...
    , configDebugInfo = Flag NoDebugInfo
      ...
    }

and

cabal build and cabal install

elaborateInstallPlan
  :: HasCallStack
  => Verbosity
  -> Platform
  -> Compiler
  -> ProgramDb
  -- ^ __Configured__ compiler program database (ghc, ghc-pkg, haddock, ld, etc)
  -> Maybe PkgConfigDb
  -> DistDirLayout
  -> StoreDirLayout
  -> SolverInstallPlan
  -> [PackageSpecifier (SourcePackage (PackageLocation loc))]
  -> Map PackageId PackageSourceHash
  -> InstallDirs.InstallDirTemplates
  -> ProjectConfigShared
  -> PackageConfig
  -> PackageConfig
  -> Map PackageName PackageConfig
  -> LogProgress (ElaboratedInstallPlan, ElaboratedSharedConfig)
  ...
                  , withDebugInfo = perPkgOptionFlag NoDebugInfo pkgid packageConfigDebugInfo
  ...