fix(lint): allow String fields in vp_global_commands

clap derive requires owned String fields. The types were previously covered
by the crate-level allow in vp_global_cli; carry the same exemption that
vp_pm_cli uses for its clap surface.

Author: jong-kyung

crates/vp_global_commands/src/lib.rs

@@ -4,6 +4,9 @@
 //! enum, and the local CLI binding uses [`is_global_only`] to recognise these
 //! names so the two surfaces cannot drift apart.
 
+// clap derive surfaces require owned `String` fields, as in `vp_pm_cli`.
+#![allow(clippy::allow_attributes, clippy::disallowed_types)]
+
 use clap::{Subcommand, builder::Command};
 
 /// Commands that only the global `vp` binary can run.