Allow default overrideFrequency (#838)

* Allow overrideFrequency == 0
* Fix typo

---------

Co-authored-by: philon- <philon-@users.noreply.github.com>

packages/web/public/i18n/locales/en/common.json

@@ -113,7 +113,7 @@
       "key": "Key is required."
     },
     "invalidOverrideFreq": {
-      "number": "Invalid format, expected between 430-930 MHz."
+      "number": "Invalid format, expected a value in the range 410-930 MHz or 0 (use default)."
     }
   },
   "yes": "Yes",

packages/web/src/validation/config/lora.ts

@@ -20,7 +20,7 @@ export const LoRaValidationSchema = z.object({
   sx126xRxBoostedGain: z.boolean(),
   overrideFrequency: z.coerce
     .number()
-    .refine((val) => val >= 410 && val <= 930, {
+    .refine((val) => val === 0 || (val >= 410 && val <= 930), {
       message: "formValidation.invalidOverrideFreq.number",
     }),
   ignoreIncoming: z.coerce.number().array(),