[dawn] Expand pixel 10 fix to all of imagination

Bug: 443906252
Change-Id: If6878f2bbd0df0b593c2caa82ad5efd4af817195
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/273974
Commit-Queue: Peter McNeeley <petermcneeley@google.com>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Reviewed-by: James Price <jrprice@google.com>

Author: Peter McNeeley

src/dawn/native/vulkan/PhysicalDeviceVk.cpp

@@ -976,7 +976,9 @@ void PhysicalDevice::SetupBackendDeviceToggles(dawn::platform::Platform* platfor
         // TODO(crbug.com/437807243): If newer driver version without bug is released then we can
         // gate this on driver version.
         deviceToggles->Default(Toggle::VulkanIncompletePipelineCacheWorkaround, true);
+    }
 
+    if (gpu_info::IsImgTec(GetVendorId())) {
         // crbug.com/443906252: Polyfill for case switch with large ranges.
         deviceToggles->Default(Toggle::VulkanPolyfillSwitchWithIf, true);
     }