Add android native build flag support

[AzulEterno]

Summary

Linked issue

Closes #

Verification

Per CONTRIBUTING.md > Code Quality Requirements,
I ran the following locally and they all pass:

• cargo fmt --all -- --check
• cargo clippy --all-targets --all-features -- -D warnings
• cargo test --all-features
• cargo build --release

Scope

• One feature or fix per PR (no unrelated cleanups bundled in)
• No new dependencies, or rationale provided in the summary above
• No #[allow(clippy::...)] suppressions, or rationale provided
  (see CONTRIBUTING.md)

AI-assisted contributions

If you used an AI assistant (Copilot, Claude, ChatGPT, Cursor, etc.) to
write any of this code, that is fine, but please confirm:

• I have read every line I am submitting
• I ran the verification commands above myself
• The PR description reflects what the code actually does

Notes for the reviewer