Add debug logging for priceInCity in getProductPricesInCities method of FalukantService

- Introduced a console log to capture the values of priceInCity, currentPrice, and PRICE_TOLERANCE, enhancing visibility into the price comparison process.
- This addition aims to improve traceability and facilitate debugging during price evaluations, building on previous logging enhancements.

backend/services/falukantService.js

@@ -3752,6 +3752,7 @@ class FalukantService extends BaseService {
             // Nur Städte zurückgeben, wo der Preis höher ist
             // Kleine Toleranz (0.01) für Rundungsfehler bei Gleitkommaberechnungen
             const PRICE_TOLERANCE = 0.01;
+            console.log(`[getProductPricesInCities] priceInCity=${priceInCity}, currentPrice=${currentPrice}, PRICE_TOLERANCE=${PRICE_TOLERANCE}`);
             if (priceInCity > currentPrice - PRICE_TOLERANCE) {
                 // Branch-Typ bestimmen
                 let branchType = null; // null = kein Branch