spirv: Fix SpvOpExpectKHR

This instruction behaves the same as *OpCopyObject* by making a copy of _Value_.

Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27265>

src/compiler/spirv/spirv_to_nir.c

@@ -4383,6 +4383,7 @@ vtn_handle_composite(struct vtn_builder *b, SpvOp opcode,
       break;
    }
    case SpvOpCopyObject:
+   case SpvOpExpectKHR:
       vtn_copy_value(b, w[3], w[2]);
       return;
 
@@ -6462,18 +6463,18 @@ vtn_handle_body_instruction(struct vtn_builder *b, SpvOp opcode,
       vtn_handle_integer_dot(b, opcode, w, count);
       break;
 
+   case SpvOpBitcast:
+      vtn_handle_bitcast(b, w, count);
+      break;
+
    /* TODO: One day, we should probably do something with this information
     * For now, though, it's safe to implement them as no-ops.
     * Needed for Rusticl sycl support.
     */
    case SpvOpAssumeTrueKHR:
+      break;
+
    case SpvOpExpectKHR:
-      break;
-
-   case SpvOpBitcast:
-      vtn_handle_bitcast(b, w, count);
-      break;
-
    case SpvOpVectorExtractDynamic:
    case SpvOpVectorInsertDynamic:
    case SpvOpVectorShuffle: