Fix Leaflet map initialization: prevent DOM errors and ensure robust container checks

- Refactored initializeMap to accept the DOM node instead of the ref object
- Updated all checks to use the DOM node directly
- Improved useInitializeMap to only call initializeMap when the container is ready
- Prevents "mapRef.current ist nicht definiert oder nicht im DOM" errors
- Ensures map is only initialized when the container is attached

.env.development

@@ -25,4 +25,4 @@ NEXT_PUBLIC_USE_MOCKS=true
 NEXT_PUBLIC_BASE_PATH=/talas5
 # Oder leer lassen für direkten Zugriff ->  NEXT_PUBLIC_BASE_PATH=
 # App-Versionsnummer
-NEXT_PUBLIC_APP_VERSION=1.1.316
+NEXT_PUBLIC_APP_VERSION=1.1.317