feat(falukant): add scandalExtraDailyPct field and update related components

- Introduced a new field `scandalExtraDailyPct` in the relationship state model to track additional scandal risk per day, with validation constraints.
- Updated the FalukantService to include the new field in relevant calculations and data handling.
- Enhanced the frontend components, including RevenueSection and FamilyView, to display the scandal risk information and updated price calculations.
- Added localization entries for the new field in multiple languages to ensure clarity for users.

frontend/src/i18n/locales/es/falukant.json

@@ -761,6 +761,7 @@
                 "visibility": "Visibilidad",
                 "discretion": "Discreción",
                 "maintenance": "Mantenimiento",
+                "scandalExtraDailyPct": "Riesgo extra de escándalo/día",
                 "monthlyCost": "Coste mensual",
                 "politicalFreeSlotsHint": "Los cargos políticos te conceden {count} plaza(s) de relación sin mantenimiento mensual (primero cuentan las relaciones más baratas).",
                 "politicalFreeMaintenance": "Cargo (gratis)",