message: fix(compiler): prepare for future Bazel semantics of +=
  This is a local mod that was already applied in G3.
  PR Close
diff: @@ -115,7 +115,7 @@ def ngc_compile_action(ctx, label, inputs, outputs, messages_out, config_file_pa
  else:
  supports_workers = str(int(ctx.attr._supports_workers))
  - arguments = _EXTRA_NODE_OPTIONS_FLAGS
  + arguments = list(_EXTRA_NODE_OPTIONS_FLAGS)
  # One at-sign makes this a params-file, enabling the worker strategy.
  # Two at-signs escapes the argument so it's passed through to ngc
  # rather than the contents getting expanded.
  