cmd: Fix no-open inverted flag check

[RomanMinkin]

Related issue

Command hydra token user --no-open does not open up the browser since the --no-open flag check is inverted, similar to #1258 and ory/keto#85

Checklist

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  vulnerability, I confirm that I got green light (please contact hi@ory.sh) from the maintainers to push the changes.
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• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation within the code base (if appropriate)
• I have documented my changes in the developer guide (if appropriate)

[RomanMinkin]

Thank you @aeneasr !