GraphQL queries with missing params are logged as ERROR/WARNING

[hbruch]

The following graphql query

{
  stations { id }
}

results in ERROR/WARN log messages:

2023-09-13 11:32:22.082  WARN 20235 --- [nio-8080-exec-4] n.g.e.SimpleDataFetcherExceptionHandler  : Exception while fetching data (/stations) : Cannot invoke "java.lang.Double.doubleValue()" because "p" is null

java.lang.NullPointerException: Cannot invoke "java.lang.Double.doubleValue()" because "p" is null
	at org.entur.lamassu.controller.GraphQLQueryController.lambda$validateRange$1(GraphQLQueryController.java:183)
	at java.base/java.util.function.Predicate.lambda$negate$1(Predicate.java:80)
...

2023-09-13 11:32:22.087 ERROR 20235 --- [nio-8080-exec-4] g.k.e.error.DefaultGraphQLErrorHandler   : Error executing query Exception while fetching data (/stations) : Cannot invoke "java.lang.Double.doubleValue()" because "p" is null

java.lang.NullPointerException: Cannot invoke "java.lang.Double.doubleValue()" because "p" is null
	at org.entur.lamassu.controller.GraphQLQueryController.lambda$validateRange$1(GraphQLQueryController.java:183)
	at java.base/java.util.function.Predicate.lambda$negate$1(Predicate.java:80)
...

Validation for mandatory / expected parameters should validate for their provision.