Vendor wgpu-hal 29.0.4 and i-slint-renderer-skia 1.17.1, unmodified

The Android develop view reads its frame back through memory (TD-1)
because wgpu's Vulkan swapchain never pre-rotates, and a portrait window
on this tablet's landscape panel then tears. The fix is a small patch to
each of these two crates, and this commit is only the ground it lands on:
both are byte-for-byte the crates.io sources the lockfile already
resolved, so the commits that follow are the patch and nothing else.

third_party/ is excluded from the workspace, or every path dependency
under the root would become a member and `--workspace` would test and
lint upstream code as ours. The README says how to carry the patches
across a Slint or wgpu bump, which matters because a stale version here
does not fail the build — cargo just warns and uses the unpatched crate.

third_party/wgpu-hal-29.0.4/examples/ray-traced-triangle/shader.wgsl

@@ -0,0 +1,39 @@
+enable wgpu_ray_query;
+
+struct Uniforms {
+    view_inv: mat4x4<f32>,
+    proj_inv: mat4x4<f32>,
+};
+@group(0) @binding(0)
+var<uniform> uniforms: Uniforms;
+
+@group(0) @binding(1)
+var output: texture_storage_2d<rgba8unorm, write>;
+
+@group(0) @binding(2)
+var acc_struct: acceleration_structure;
+
+@compute @workgroup_size(8, 8)
+fn main(@builtin(global_invocation_id) global_id: vec3<u32>) {
+    let target_size = textureDimensions(output);
+
+    let pixel_center = vec2<f32>(global_id.xy) + vec2<f32>(0.5);
+    let in_uv = pixel_center / vec2<f32>(target_size.xy);
+    let d = in_uv * 2.0 - 1.0;
+
+    let origin = (uniforms.view_inv * vec4<f32>(0.0, 0.0, 0.0, 1.0)).xyz;
+    let temp = uniforms.proj_inv * vec4<f32>(d.x, d.y, 1.0, 1.0);
+    let direction = (uniforms.view_inv * vec4<f32>(normalize(temp.xyz), 0.0)).xyz;
+
+    var rq: ray_query;
+    rayQueryInitialize(&rq, acc_struct, RayDesc(0u, 0xFFu, 0.1, 200.0, origin, direction));
+    rayQueryProceed(&rq);
+
+    var color = vec4<f32>(0.0, 0.0, 0.0, 1.0);
+    let intersection = rayQueryGetCommittedIntersection(&rq);
+    if intersection.kind != RAY_QUERY_INTERSECTION_NONE {
+        color = vec4<f32>(intersection.barycentrics, 1.0 - intersection.barycentrics.x - intersection.barycentrics.y, 1.0);
+    }
+
+    textureStore(output, global_id.xy, color);
+}