If the difference between formats is sRGB vs not or normalized vs
integer, still allow the transfer path to be taken.

Bug: b/159211070
Change-Id: I53334812ed29baec6ad434de1fcd6dde35049c12
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2551534
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>