[api-query] Restore DriverVersion assignment on D3D12 devices

PR #1206 accidentally replaced the DriverVersion assignment introduced in #1205 with the new DriverName assignment, instead of adding alongside it. The result was that:

  * D3D12 devices no longer reported a driver version (regression of #1205).

  * The DriverVer constructor parameter became unused, which clang-tidy promotes to an error on Windows CI (misc-unused-parameters, -warnings-as-errors), breaking the build for every Windows job.

Restore the missing 'DriverVersion = std::move(DriverVer);' line so both DriverName and DriverVersion are populated, matching the VK backend and what api-query expects.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: alsepkow

lib/API/DX/Device.cpp

@@ -962,6 +962,7 @@ class DXDevice : public offloadtest::Device {
         DSVAllocator(std::move(DSVAllocator)) {
     Description = std::move(Desc);
     DriverName = "DirectX";
+    DriverVersion = std::move(DriverVer);
   }
   DXDevice(const DXDevice &) = delete;
   DXDevice &operator=(const DXDevice &) = delete;