Optimize and tune APX NDD form codegen

[anthonycanino]

#108796 enabled non-destructive destination form of legacy instructions for the JIT. This task is the tune the optimization and investigate if/what cases the optimization should be applied and if there are further improvements available.

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[anthonycanino]

@JulieLeeMSFT this item is completed with #115809. I will close, and you may mark the item closed on the master list.