GraphQLContext.plus(map: Map<*, Any?>) throws graphql.AssertException for null values

[agatan]

Library Version
7.1.4

Describe the bug
GraphQLContext.plus(map: Map<*, Any?>) has a signature that suggests it can accept null values, but passing null actually throws an AssertException.

graphql-kotlin/generator/graphql-kotlin-schema-generator/src/main/kotlin/com/expediagroup/graphql/generator/extensions/GraphQLContextExtensions.kt

Lines 65 to 66 in d038e2e

	operator fun GraphQLContext.plus(map: Map<*, Any?>): GraphQLContext =
	putAll(map)

To Reproduce

GraphQLContext.newContext().build().plus(mapOf("X" to null))

will throw graphql.AssertException: Object required to be not null.

Expected behavior

One of the following should be addressed:

• Change the signature to prevent null values from being passed. For example, change plus(map: Map<, Any?>) to plus(map: Map<, Any>).
• Update the implementation to exclude entries where the value is null.