Use per-HRIR delay alignment for B-Format-to-HRTF

For HOA signals, the number of responses used with slightly varying delays
causes noticeable attenuation in the higher frequencies because of destructive
phase interference. This is not a result of minimum phase alignment (attempts
to compensate for minimum phase had negligible results), nor does it affect
first-order signals (which only has 4 unique responses on each side).

This alternate alignment is only used when doing second-order rendering for
HRTF output, which is not the default with HRTF. It's likely not very ideal,
but it's necessary to prevent second-order rendering with HRTF from sounding
muffled.

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