fix(compile): downgrade AWF for host access

[Copilot]

Summary

ado-aw 0.45 generated AWF invocations that rely on --enable-host-access, but pinned AWF 0.27.32, where the new default network isolation breaks the sandbox → host MCPG path used by standalone pipelines.

• Downgrade the pinned AWF version to the last known-compatible release:

  pub const AWF_VERSION: &str = "0.27.9";

• Add compiler regression coverage to ensure generated YAML uses AWF 0.27.9 and does not regress to 0.27.32.

Test plan

• cargo build
• cargo test --test compiler_tests test_compiled_output_no_unreplaced_markers
• cargo test
• cargo clippy --all-targets --all-features