[SurfaceFlinger] Apply legacy saturation matrix globally for Display P3.

We disallow legacy saturation matrix since this commit. For those do
have such a matrix, instead of applying it between sRGB->P3 conversion,
we apply it on P3. This means P3 and HDR tone mapped to P3 are also
saturated.

Bug: 110840428
Test: See red/orange scene through Camera ViewFinder, take a picture,
      check the picture in Photos App, the red/orange should have
      similar saturation.
Change-Id: I335b39888a76c7e411d9e03d9ad71448cbd7c05f