fix(fusion_clock): Photo Verification is now a real master switch (was ignored)

The global enable_photo_verification toggle only fed the portal get_settings flag;
the actual writes ignored it — the NFC kiosk gated on nfc_photo_required and the
portal on location.require_photo, so photos were captured even with the toggle OFF.
Now it's the master: OFF => no photo captured/stored anywhere (NFC kiosk config +
tap, and portal check-in); ON => per-location / NFC settings apply. Test + help
text updated. Bump 3.16.0 -> 3.16.1.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

fusion_clock/__manifest__.py

@@ -5,7 +5,7 @@
 
 {
     'name': 'Fusion Clock',
-    'version': '19.0.3.16.0',
+    'version': '19.0.3.16.1',
     'category': 'Human Resources/Attendances',
     'summary': 'Complete Employee T&A with Geofencing, Shifts, Penalties, Overtime, Kiosk, Dashboard & Payroll Export',
     'description': """