MatrixDelayedUpdateCUDA needs mw_evalGradWithSpin

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Is your feature request related to a problem? Please describe.
MatrixDelayedUpdateCUDA currently has a throw stating it needs an implementation of mw_evalGradWithSpin. Once this is implemented, need to remove guard in test_TrialWaveFunction introduced in #4918.

Describe the solution you'd like
Implement the missing API.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

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