Can't write 2 operations on the Graphiql Editor and execute a selected one.

[saeta-eth]

Hi @hwillson

I noticed that there is an issue trying to perform a query/mutation when users type more than one query/mutation on the editor.

Yesterday I was able to fix this issue, I would like to submit this pull request.

Thank you,
Sebastian.

[hwillson]

We love PR's @slorenzo - thanks!

[saeta-eth]

Great @hwillson. I already sent it, let me know your thoughts!