Reland "Support depth32float sampling on D3D12"

This is a reland of 071fe56ffe

It creates textures as TYPELESS if they may need reinterpretation
of the bit layout. Right now only sampled Depth32Float needs this
so it is special-cased.

Original change's description:
> Support depth32float sampling on D3D12
>
> Bug: dawn:367
> Change-Id: I026e718130cbd92427c6292045fd041c878d4f77
> Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/20840
> Commit-Queue: Austin Eng <enga@chromium.org>
> Reviewed-by: Stephen White <senorblanco@chromium.org>

Bug: dawn:367
Change-Id: I8b0ad465915c4476099fc1097e0cd02b23bd21b6
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/21640
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Rafael Cintron <rafael.cintron@microsoft.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>

src/tests/end2end/DepthSamplingTests.cpp

@@ -505,7 +505,8 @@ TEST_P(DepthSamplingTest, CompareFunctionsNonNormalizedContentsCompute) {
     }
 }
 
-// TODO(crbug.com/dawn/367): Does not work on D3D12 because we need to reinterpret the texture view
-// as R32Float to sample it. See tables here:
-// https://docs.microsoft.com/en-us/windows/win32/direct3ddxgi/hardware-support-for-direct3d-12-1-formats
-DAWN_INSTANTIATE_TEST(DepthSamplingTest, MetalBackend(), OpenGLBackend(), VulkanBackend());
+DAWN_INSTANTIATE_TEST(DepthSamplingTest,
+                      D3D12Backend(),
+                      MetalBackend(),
+                      OpenGLBackend(),
+                      VulkanBackend());