In the --help output, the "Global Flags" and "Commands" output order should be consistent

[case-fastly]

Version

Fastly CLI version v13.3.0 (0719b16c)
Built with go version go1.24.11 darwin/arm64 (2026-02-13)
Viceroy version: viceroy 0.16.1

What happened

For fastly service --help, I see the output in this order:

1. "Global Flags" (top)
2. "Commands" (bottom)

Then from fastly compute publish --help, I see

1. "Optional Flags" (top)
2. "Global Flags" (bottom)

Ideally, we'd have consistent ordering across the entire CLI.