fix(fsm): Fix StateLog.by capture and cycle validation; add photographer field to photos

## FSM State Machine Fixes

### StateLog.by Field Capture
- Modified TransitionMethodFactory to pass 'user' as 'by' kwarg to enable
  django-fsm-log's @fsm_log_by decorator to correctly capture the user who
  performed the transition
- Applied fix to both escalate_transition and create_transition_method
- Uses exec() to dynamically create transition functions with correct __name__
  before decorators are applied, ensuring django-fsm's method registration works

### Cycle Validation Behavior
- Changed validate_no_cycles() to return ValidationWarning instead of ValidationError
- Cycles are now treated as warnings, not blocking errors, since cycles are often
  intentional in operational status FSMs (e.g., reopening after temporary closure)

### Ride Status Transitions
- Added TEMPORARY_CLOSURE -> OPERATING transition (reopen after temporary closure)
- Added SBNO -> OPERATING transition (revival - ride returns to operation)

## Field Parity

### Photo Models
- Added 'photographer' field to RidePhoto and ParkPhoto models
- Maps to frontend 'photographer_credit' field for full schema parity
- Includes corresponding migrations for both apps

### Serializers
- Added 'photographer' to RidePhotoSerializer and ParkPhotoSerializer read_only_fields

backend/apps/rides/choices.py

@@ -91,6 +91,7 @@ RIDE_STATUSES = [
             "css_class": "bg-yellow-100 text-yellow-800",
             "sort_order": 2,
             "can_transition_to": [
+                "OPERATING",  # Reopen after temporary closure
                 "SBNO",
                 "CLOSING",
             ],
@@ -109,6 +110,7 @@ RIDE_STATUSES = [
             "css_class": "bg-orange-100 text-orange-800",
             "sort_order": 3,
             "can_transition_to": [
+                "OPERATING",  # Revival - ride returns to operation
                 "CLOSED_PERM",
                 "DEMOLISHED",
                 "RELOCATED",