_do_electrs_status_advanced only handled the negative cases: each guard
set installed/configured/status to its false-y value and returned early.
On the happy path (electrs installed, configured and running) it fell
through, populated the ports and sync details, but never set
s.installed/s.configured/s.status - so they kept their AppStatus
defaults (False/False/offline).
The /apps/status_advanced/electrs endpoint therefore reported electrs as
not installed and offline while simultaneously returning its ports and
sync details, disagreeing with the app_state_update_message status
(fusion44/blitz_api#286). Set the positive values when each guard passes.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
