Clarify support bundle CLI help

[Atomics-hub]

Summary

• update sidecar-package-support-bundle CLI help to mention operator, doctor, deploy, and preflight contents
• add a parser/help assertion so generated long help stays aligned with the packaged support bundle behavior

Verification

• cargo fmt --check
• cargo test --locked sidecar_package_support_bundle_accepts_root_and_out
• cargo run --locked -- release-status --json | jq '.ready_for_alpha_rc'
• cargo clippy --all-targets --all-features -- -D warnings
• cargo run --locked -- release-audit