Fix filtering out dx12 software adapters

[Wumpf]

Connections

• This regressed in [wgpu-hal] Migrate d3d12 backend over to windows-rs #5956

Description

The piece of code that broke is a filter for software rasterizer that incorrectly advertised themselves as integrated GPUs.

Ci was still fine because according to the comment on headless machines we get both a "real" and a "fake" software rasterizers. Due to this bug we'd pick the "fake" one and still run fine, but we want the "real" software rasterizer in actuality.

For reference: this was the original change introducing the filter in the first place

See the original change here:
https://github.com/gfx-rs/wgpu/pull/4259/files#diff-3da333eee10e8a957c04876a1a798ec4047053e7f33bb87b4fabbe2591a8e969R26
if desc.VendorId == 5140 && (desc.Flags & dxgi::DXGI_ADAPTER_FLAG_SOFTWARE) == 0 {

(checks that software flag is NOT set)

Testing

Ran cargo run -p wgpu-info: Before no WARP, after have WARP

Caveat: wgpu-info is actually broken atm! It doesn't build with dx12, had to patch that in and then remove static-dxc again due to a linker issue. Out of scope for this PR though.
Started a fix here #6844

Checklist

• Run cargo fmt.
• Run taplo format.
• Run cargo clippy. If applicable, add:
  • --target wasm32-unknown-unknown
  • --target wasm32-unknown-emscripten
• Run cargo xtask test to run tests.
• Add change to CHANGELOG.md. See simple instructions inside file.

[cwfitzgerald]

Big Oops