Panic in GraphQL server when variable is expected to be an array, but isn't

[amaster507 (Anthony Master)]

@oising

I would expect a type error, not a panic

But, it isn’t a GraphQL type error according to spec:

If the value passed as an input to a list type is not a list and not the null value, then the result of input coercion is a list of size one, where the single item value is the result of input coercion for the list’s item type on the provided value

This was fixed in 20.11.1:

@aman-bansal

Fix(GraphQL): This PR addd input coercion from single object to list and fix panic when we
pass single ID in filter as a string. (#7133) (#7306)