The RPCD backend was generating module IDs with dashes (network-modes,
client-guardian, etc.) but the UCI config uses underscores (network_modes,
client_guardian, etc.). This mismatch prevented modules from being loaded
and displayed in the dashboard.
Fixed by adding conversion of dashes to underscores when generating
module IDs from RPCD script names.
Fixes: luci-app-secubox/root/usr/libexec/rpcd/secubox:18
