Defensively check GQL path parts in framework_graphql

[jollysahil]

Overview

When constructing deepest path, removes None values from path parts and fields

Related Github Issue

#814

Testing

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[hmstepanek]

Thanks for implementing a fix for this! Could you also create a test that reproduces the error in #814?

[jollysahil]

@hmstepanek thanks for your review, I have pushed up a query which I believe causes the error. I haven't been able to get the test to run locally - do you have any documentation on the steps needed to install dependencies/run tests?

[jollysahil]

@hmstepanek just checking back on this?

[jollysahil]

closing due to lack of follow up