Suppress running dawn_end2end_tests on Windows Intel Vulkan

This configuration is very flaky, so suppress it to remove flakiness
from CQ. We don't expose Vulkan on Windows for WebGPU so we're not
losing test coverage for WebGPU. We'll want to fix and re-enable this
for Dawn Native in the future.

Bug: chromium:1338622, dawn:1392
Change-Id: I67f8472a5f6256107419de05d6f7420a75761331
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/94640
Reviewed-by: Loko Kung <lokokung@google.com>
Reviewed-by: Shrek Shao <shrekshao@google.com>
Commit-Queue: Austin Eng <enga@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>

src/dawn/tests/DawnTest.cpp

@@ -551,6 +551,16 @@ void DawnTestEnvironment::SelectPreferredAdapterProperties(const dawn::native::I
                 (properties.backendType == wgpu::BackendType::Null);
         }
 
+#if DAWN_PLATFORM_IS(WINDOWS)
+        if (selected && !mRunSuppressedTests &&
+            properties.backendType == wgpu::BackendType::Vulkan &&
+            gpu_info::IsIntel(properties.vendorID)) {
+            dawn::WarningLog()
+                << "Deselecting Windows Intel Vulkan adapter. See https://crbug.com/1338622.";
+            selected &= false;
+        }
+#endif
+
         // In Windows Remote Desktop sessions we may be able to discover multiple adapters that
         // have the same name and backend type. We will just choose one adapter from them in our
         // tests.