Adjust jquery selector to be correct so button is enabled when trait is changed

[MuchQuak]

Issue #1794

Summary

At some point input buttons were swapped to button which broke this selector. Simple fix to change selector to use button instead of input. Did check that all other uses had button instead of input this was the only page which used disabled by default and enable on trait change feature so no rippling of more issues.

Pull Request Checklist:

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Thanks for contributing and keeping it clean!

[themerekat]

Works locally now!