refactor: remove deprecated non-functional network-acl rule flags

[bkiran6398]

🔧 Changes

Removes the individual rule-configuration flags from auth0 network-acl create and auth0 network-acl update.

These flags were registered into local variables that were never read, so they had no effect on the created or updated rule. They only added confusion by appearing usable while doing nothing. The --rule flag (rule configuration as JSON) was already the only functional non-interactive path and remains unchanged.

• Removes the flags: --action, --redirect-uri, --scope, --asns, --country-codes, --subdivision-codes, --ipv4-cidrs, --ipv6-cidrs, --ja3-fingerprints, --ja4-fingerprints, --user-agents, --auth0-managed.
• Removes the now-orphaned deprecation helper.
• Interactive prompts are unaffected; they never depended on these flags.

Impact: passing one of the removed flags now returns an unknown flag error instead of being silently ignored.

Configure a rule non-interactively with --rule:

auth0 network-acl create --rule '{"action":{"block":true},"match":{"ipv4_cidrs":["1.2.3.4/32"]},"scope":"authentication"}'

📚 References

• These flags were already deprecated in refactor: deprecate redundant rule flags from network-acl create and update #1647

🔬 Testing

• make test-unit passes.
• go build ./... and go vet ./internal/cli/ pass.
• make docs produces no diff (the flags were hidden, so they were never in the generated reference).
• Manual: running auth0 network-acl create / update with no flags still launches the interactive prompts unchanged; passing a removed flag returns an unknown flag error.

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)