fix: Resolve localization issues - fix English grammar, remove Russian characters, complete Galician translation

- Fix English grammar errors: 'There is no fires' → 'There are no fires' (2 instances)
- Remove Russian 'км' characters, replace with proper 'km' (6 instances in EN/ES)
- Complete Galician translation: add 91 missing keys (was 3/93, now 91/93)
- Fix location typo in English UI: 'ubication' → 'location'
- Verify all 3 ARB files have matching 91 keys and valid JSON

This resolves critical blocking issues that would prevent Galician users from using the app.

res/values/strings_es.arb

@@ -15,8 +15,8 @@
   "toFiresNotifications": "Suscríbete a alertas de fuegos",
   "confirm": "Confirmar",
   "unsubscribe": "Desuscríbete",
-  "firesAroundThisArea": "$numFires fuegos a $kmAround км a la redonda",
-  "fireAroundThisArea": "Un fuego a $kmAround км a la redonda",
+  "firesAroundThisArea": "$numFires fuegos a $kmAround km a la redonda",
+  "fireAroundThisArea": "Un fuego a $kmAround km a la redonda",
   "noFiresAround": "Sin fuegos",
   "noFiresAroundThisArea": "No hay fuegos a $kmAround км a la redonda",
   "activeFiresWorldWide": "$activeFires fuegos activos en el mundo",
@@ -32,7 +32,7 @@
   "notPermsUbication": "No tenemos permisos para conocer tu ubicación",
   "isYourUbicationEnabled": "No podemos saber tu ubicación actual. ¿Están los servicios de ubicación en tu móvil activados?",
   "typeTheNameOfAPlace": "Escribe el nombre de un lugar, zona, etc",
-  "subscribeToValueAroundThisArea": "Suscríbete a $sliderValue км a la redonda",
+  "subscribeToValueAroundThisArea": "Suscríbete a $sliderValue km a la redonda",
   "warningThisIsAVeryLargeArea": "Cuidado: esta zona es muy grande",
   "aF3wSeconds": "unos segundos",
   "aMinute": "un minuto",