If a depth/stencil attachment is invalidated, but subsequently drawn to
in the same render pass, undo the invalidate when the render pass is
closed.  Adapted from
https://chromium-review.googlesource.com/c/angle/angle/+/2386478.

Bug: b/167275320
Bug: angleproject:4836
Change-Id: I17a35bfd692ddc403ceaa6ec44b5c4f16ff9eed6
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2461464
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Ian Elliott <ianelliott@google.com>