Fix issue with callbacks

[jClugstor]

Checklist

• [ x] Appropriate tests were added
• [ x] Any code changes were done in a way that does not break public API
• [ x] All documentation related to code changes were updated
• [ x] The new code follows the
  contributor guidelines, in particular the SciML Style Guide and
  COLPRAC.
• [ x] Any new documentation only uses public API

Additional context

This is what was causing some of the integrator tests to fail, change_t_via_interpolation! wasn't getting the correct number of arguments, causing callbacks to fail. This should fix using callbacks with DelayDiffEq.