Bugfix cherry pick: RawVariables and CoercedVariables are public API (#2868)#2870

bbakerman merged 1 commit into18.xgraphql-java/graphql-java:18.xfrom

cherry-pick-raw-coerced-variable-public-apigraphql-java/graphql-java:cherry-pick-raw-coerced-variable-public-apiCopy head branch name to clipboard