Playground spams introspection queries when introspection is not supported

[adamnoakes]

Related to #1085

I believe the issue is this https://github.com/prisma-labs/graphql-playground/blob/d8d655e8ded50034f5f8a83f05069769fc652463/packages/graphql-playground-react/src/components/Playground.tsx#L163-L170

Our production server has introspection disabled, with playground pointing to our production server it will send many introspection queries even with polling disabled, which results in spikes in errors.

This could be fixed in many ways:

• Option to disable introspection queries from playground
• Only retry on network errors
• Option to disable retry/ set max retries

This issue pertains to the following package(s):

• GraphQL Playground - Electron App
• GraphQL Playground HTML
• [] GraphQL Playground
• GraphQL Playground Express Middleware
• GraphQL Playground Hapi Middleware
• GraphQL Playground Koa Middleware
• GraphQL Playground Lambda Middleware

What OS and OS version are you experiencing the issue(s) on?

Not OS related

What version of graphql-playground(-electron/-middleware) are you experiencing the issue(s) on?

playground 1.7.20

What is the expected behavior?

It should not spam bad requests

What is the actual behavior?

Playground will retry 10+ times to fetch schema

What steps may we take to reproduce the behavior?

Run playground against server which does not support introspection

Please provide a gif or image of the issue for a quicker response/fix.