Vulkan: Use correct aspectMask Update ImageHelper::stageSubresourceUpdateFromImage() to use the correct aspectMask flags based on the image's format, rather than assuming only color formats. Additionally, only call ensureMutable() for sRGB textures that indicate srgbDecode == GL_SKIP_DECODE_EXT. Bug: angleproject:6852 Test: DepthStencilFormatsTest.DepthTextureRender Change-Id: Iaf1f167612144f836c5574b0f561cc1b58c3cb6a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3360090 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Tim Van Patten <timvp@google.com>