[ORL-73] Add support for Standard-style detail albedo mixing

[orels1]

The standard shader mixes detail albedo like this:

Base Albedo * ( ( 1 - Detail Mask * Detail Strength ) + Detail Albedo * 2 * Detail Mask * Detail Strength )

Which is different from HDRP albedo mixing which remaps albedo to a -1 1 range and then lerps to it.

_{From SyncLinear.com | ORL-73}

[orels1]

This is going to be released with 6.4.0