infra: Enable gles2 deqp tests with direct SPIR-V generation Enabled on Linux/Nvidia, Windows/Nvidia and Pixel4. Bug: angleproject:4889 Change-Id: I50c5e31097bd7e1539caf7b229a249cbfa62b93d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3042557 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>