Fix extended range handling when Gamma OETF is used

Populating fakeOutputDataspace got dropped, which turned off the one-off
workaround to bypass skia's color management to encode as gamma 2.2.

Turn it back on to prevent flickers on some devices.

Bug: 293311643
Test: SilkFX test app
Change-Id: I4370756c48fe79c1b4fcbd88a3bf2579fde1bf65