Re-enable language-c test

[thumphries]

Revert 38657ad once we resolve this failure

$ bazel build --jobs=2 $(for p in $(cat test-packages.txt); do echo @haskell_$p//...; done)
INFO: Invocation ID: 0d834acb-0118-4319-82fa-4d0f8a80f63a
DEBUG: /home/tim/.cache/bazel/_bazel_tim/3dfb6465070eadfbfb3bf40803766bf8/external/bazel_skylib/lib.bzl:30:1: WARNING: lib.bzl is deprecated and will go away in the future, please directly load the bzl file(s) of the module(s) needed as it is more efficient.
INFO: Analysed 778 targets (0 packages loaded, 0 targets configured).
INFO: Found 778 targets...
ERROR: /home/tim/.cache/bazel/_bazel_tim/3dfb6465070eadfbfb3bf40803766bf8/external/haskell_language_c__176479442/BUILD:17:1: error executing shell command: '/bin/bash -c 
        export PATH=${PATH:-} # otherwise GCC fails on Windows
        $(< bazel-out/k8-fastbuild/bin/external/haskell_language_c__176479442/ghc_args_language-c_HaskellBuildLibrary) $...' failed (Exit 1) bash failed: error executing command /bin/bash -c ... (remaining 1 argument(s) skipped)

Use --sandbox_debug to see verbose messages from the sandbox

bazel-out/k8-fastbuild/bin/external/haskell_language_c__176479442/gen-srcs-language-c/src/Language/C/Analysis/DeclAnalysis.hs:32:1: error:
    Could not find module ‘Language.C.Analysis.AstAnalysis’
    Use -v to see a list of the files searched for.
   |
32 | import {-# SOURCE #-} Language.C.Analysis.AstAnalysis (tExpr, ExprSide(..))
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^