Fixed overrideFrequency Input Constraints (#801)

* Fixed overrideFrequency to properly allow for floats with a minimum of 410 MHz and maximum of 930 MHz. Added 3 decimal point check.

* Removed duplicate error message in FormInput.tsx

* Added error message for overrideFrequency in several locales

* Simplified check and reverted translated languages to English besides German. Also fixed a typo in src/components/UI/Input.tsx.

* Let i18n handle fallback + linting

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Co-authored-by: philon- <jeremy@gallant.se>

packages/web/public/i18n/locales/de-DE/common.json

@@ -135,6 +135,9 @@
 			"generic": "Dies ist ein Pflichtfeld.",
 			"managed": "Mindestens ein administrativer Schlüssel wird benötigt, um diesen Knoten zu verwalten",
 			"key": "Schlüssel erforderlich."
+		},
+		"invalidOverrideFreq": {
+			"number": "Ungültiges Format, erwartet 430-930 MHz."
 		}
 	},
 	"yes": "Ja",

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

@@ -111,6 +111,9 @@
       "generic": "This field is required.",
       "managed": "At least one admin key is requred if the node is managed.",
       "key": "Key is required."
+    },
+    "invalidOverrideFreq": {
+      "number": "Invalid format, expected between 430-930 MHz."
     }
   },
   "yes": "Yes",