Support json.RawMessage in configuration env overrides (#23610)

* support json.RawMessage in env overrides

server/config/environment.go

@@ -72,7 +72,11 @@ func applyEnvKey(key, value string, rValueSubject reflect.Value) {
 		if err == nil {
 			rFieldValue.Set(reflect.ValueOf(intVal))
 		}
-	case reflect.SliceOf(reflect.TypeOf("")).Kind():
+	case reflect.Slice:
+		if rFieldValue.Type() == reflect.TypeOf(json.RawMessage{}) {
+			rFieldValue.Set(reflect.ValueOf([]byte(value)))
+			break
+		}
 		rFieldValue.Set(reflect.ValueOf(strings.Split(value, " ")))
 	case reflect.Map:
 		target := reflect.New(rFieldValue.Type()).Interface()