Fix ChainInstrumentation misses to pass down calls chained contexts causes hanging

[tinnou]

Description

When using the ChainedInstrumentation along with the DataLoaderInstrumentation any GraphQL query containing lists of lists will hang indefinitely. The reason is, the chained instrumentation is not correctly passing calls back to the chained contexts, which will cause to never trigger dispatches. For reference this is the offending line/commit

Steps to reproduce

I reused the DataLoaderPerformanceTest but instead with a ChainedInstrumentation to reproduce the issue/hanging.
Note the use of ChainedInstrumentation below.

    void setup() {
        DataLoaderRegistry dataLoaderRegistry = setupDataLoaderRegistry()
        Instrumentation instrumentation = new ChainedInstrumentation(
                Collections.singletonList(new DataLoaderDispatcherInstrumentation(dataLoaderRegistry)))
        graphQL = setupGraphQL(instrumentation)
    }

    def "chainedInstrumentation: 760 ensure data loader is performant for lists"() {
        when:

        ExecutionInput executionInput = ExecutionInput.newExecutionInput().query(query).build()
        def result = graphQL.execute(executionInput)

        then:
        result.data == expectedData
        //
        //  eg 1 for shops-->departments and one for departments --> products
        BatchCompareDataFetchers.departmentsForShopsBatchLoaderCounter.get() == 1
        BatchCompareDataFetchers.productsForDepartmentsBatchLoaderCounter.get() == 1
    }

Fix & Testing

I created custom InstrumentationContexts that override onFieldValuesInfo and onDeferredField, onFieldValueInforespectively and passed down the calls to the instrumentations.

Regarding the tests, I did not want to parameterize every single existing test (using spock where:) inside the DataLoaderPerformanceTest specification as I believe would increase the already cognitive load of these tests. Instead, I duplicated them and I separated them while extracting the common logic. Let me know if that's ok.

[bbakerman]

Once again thanks for the excellent PR