Optimization: fix unnecessary `hasNextPage` select in some circumstances

This query shouldn't need a fetch for `hasNextPage` on messages connection since we can see there won't be a next page (because there's no limit):

```graphql
## expect(errors).toBeFalsy()
## expect(queries).toHaveLength(1);
{
forums(includeArchived: EXCLUSIVELY) {
name
messagesConnection(includeArchived: INHERIT) {
... @defer {
pageInfo {
hasNextPage
}
}
}
}
}
```

Similarly this non-deferred query should not contain the `array[null]` in the query where it's inlined:

```graphql
## expect(errors).toBeFalsy()
## expect(queries).toHaveLength(1);
## expect(queries[0]).not.toInclude("array[null")
{
forums(includeArchived: EXCLUSIVELY) {
name
messagesConnection(includeArchived: INHERIT) {
pageInfo {
hasNextPage
}
}
}
}
```