__typename support in krystal execution startegy

[shivangipandey]

w.r.t this, in our VajramExecutionStrategy :

QueryAnalyseUtil -> getNodeExecutionConfigBasedOnQuery()

We are passing disableDependentChains from above method, and here it's fetching __typename as well, which will explicitly not be part of the schema, hence it's throwing NPE.

But in general we should have built-in handling for graphQL metadata fields.

And then this field actually is part of response also, and gives TypeName as String. So, we will also have to handle that.