test(iroh-cli): disable metrics

[rklaehn]

fix(tests): disable the metrics port of all cli tests

otherwise they won't run due to "Address already in use (os error 48)".

Somehow one is missing... This still does not work:

> cargo test -- --ignored cli
running 11 tests
test cli_provide_addresses ... ok
test cli_bao_store_migration ... ok
test cli_provide_one_file_single_stdout ... ok
test cli_provide_one_file_basic ... FAILED
test cli_provide_folder ... FAILED
test cli_provide_persistence ... ok
test cli_provide_one_file_single_path ... ok
test cli_provide_from_stdin_to_stdout ... FAILED
test cli_provide_tree ... FAILED
test cli_rpc_lock_restart ... ok

Description

Notes & open questions

Change checklist

• Self-review.
• Documentation updates if relevant.
• Tests if relevant.