add is_on_curve_check

[0xhashiman]

Check this ethereum/go-ethereum#31100

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All committers have signed the CLA.

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We require contributors to sign our Contributor License Agreement. In order for us to review and merge your code, please sign the linked documents below to get yourself added. https://na3.docusign.net/Member/PowerFormSigning.aspx?PowerFormId=b15c81cc-b5ea-42a6-9107-3992526f2898&env=na3&acct=6e152afc-6284-44af-a4c1-d8ef291db402&v=2

[joshuacolvin0]

This will be included when upstream go-ethereum updates are merged in