Fix the eex compiled flaky test

[scottming]

The previous CI was fine, and I rebased the latest branch, but the merge still fails the test

[zachallaun]

This doesn't make sense to me in a setup block unless these compiler options are being changed in individual tests.

I feel like this should be in a setup_all and we should be resetting whatever the previous compiler options were on exit, since this is shared global state:

setup_all do
  prev_compiler_options = Code.compiler_options()
  Code.compiler_options(parser_options: [columns: true, token_metadata: true])

  on_exit(fn ->
    Code.compiler_options(prev_compiler_options)
  end)

  :ok
end