Fix d3d9 intel gpu fail to create image surface issue Set allowClearForRobustResourceInit to true on D3D9 backend, which fixes clients report issues where unity web app throws `Fail to create image surface` error on integrated-intel gpu Bug: chromium:1011627, chromium:1017076 Change-Id: I733434123a8c34671b1a33b87017367baec5623c TBR=geofflang@chromium.org Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1898701 Reviewed-by: Shrek Shao <shrekshao@google.com> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Geoff Lang <geofflang@chromium.org>