GraphQLError originalError prop missing on sentry addEventId

Sentry Plugin `addEventId` function builds a `GraphQLError` instance missing the `originalError` prop.

https://github.com/dotansimha/envelop/blob/9449ef36f61d4d9561f88a87204b3a16f3c6f98e/packages/plugins/sentry/src/index.ts#L114-L117

This creates issues when using it togheter with `useMaskedErrors` as the default `formatError` function relies on `originalError` down the line.

https://github.com/dotansimha/envelop/blob/9449ef36f61d4d9561f88a87204b3a16f3c6f98e/packages/core/src/plugins/use-masked-errors.ts#L19-L21

Start with packages/plugins/sentry/src/index.ts at lines 114-117, then read packages/core/src/plugins/use-masked-errors.ts at lines 19-21 to understand how formatError uses originalError. Done means the GraphQLError created by addEventId retains the original error information so it works correctly with useMaskedErrors.

Written by the indexing model from the issue text.