[UR][L0] Fix level-zero vector width queries (#17178)

Returning native and preferred vector widths using an heuristic based on
native simd width is incorrect.
Especially on simd8 GPUs (Intel Arc Alchemist and Flex Series), this
approach doesn't match what OpenCL returns.

This set of changes aligns the behavior with OpenCL, defined here:
https://github.com/intel/compute-runtime/blob/291745cdf76d83f5dc40e7ef41d347366235ccdb/opencl/source/cl_device/cl_device_caps.cpp#L236

Author: ph0b

unified-runtime/source/adapters/level_zero/device.cpp

@@ -670,35 +670,35 @@ ur_result_t urDeviceGetInfo(
   case UR_DEVICE_INFO_IMAGE_MAX_ARRAY_SIZE:
     return ReturnValue(
         size_t{Device->ZeDeviceImageProperties->maxImageArraySlices});
-  // Handle SIMD widths.
-  // TODO: can we do better than this?
+  // Handle SIMD widths, matching compute-runtime OpenCL implementation:
+  // https://github.com/intel/compute-runtime/blob/291745cdf76d83f5dc40e7ef41d347366235ccdb/opencl/source/cl_device/cl_device_caps.cpp#L236
   case UR_DEVICE_INFO_NATIVE_VECTOR_WIDTH_CHAR:
   case UR_DEVICE_INFO_PREFERRED_VECTOR_WIDTH_CHAR:
-    return ReturnValue(Device->ZeDeviceProperties->physicalEUSimdWidth / 1);
+    return ReturnValue(uint32_t{16});
   case UR_DEVICE_INFO_NATIVE_VECTOR_WIDTH_SHORT:
   case UR_DEVICE_INFO_PREFERRED_VECTOR_WIDTH_SHORT:
-    return ReturnValue(Device->ZeDeviceProperties->physicalEUSimdWidth / 2);
+    return ReturnValue(uint32_t{8});
   case UR_DEVICE_INFO_NATIVE_VECTOR_WIDTH_INT:
   case UR_DEVICE_INFO_PREFERRED_VECTOR_WIDTH_INT:
-    return ReturnValue(Device->ZeDeviceProperties->physicalEUSimdWidth / 4);
+    return ReturnValue(uint32_t{4});
   case UR_DEVICE_INFO_NATIVE_VECTOR_WIDTH_LONG:
   case UR_DEVICE_INFO_PREFERRED_VECTOR_WIDTH_LONG:
-    return ReturnValue(Device->ZeDeviceProperties->physicalEUSimdWidth / 8);
+    return ReturnValue(uint32_t{1});
   case UR_DEVICE_INFO_NATIVE_VECTOR_WIDTH_FLOAT:
   case UR_DEVICE_INFO_PREFERRED_VECTOR_WIDTH_FLOAT:
-    return ReturnValue(Device->ZeDeviceProperties->physicalEUSimdWidth / 4);
+    return ReturnValue(uint32_t{1});
   case UR_DEVICE_INFO_NATIVE_VECTOR_WIDTH_DOUBLE:
   case UR_DEVICE_INFO_PREFERRED_VECTOR_WIDTH_DOUBLE:
     // Must return 0 for *vector_width_double* if the device does not have fp64.
     if (!(Device->ZeDeviceModuleProperties->flags & ZE_DEVICE_MODULE_FLAG_FP64))
       return ReturnValue(uint32_t{0});
-    return ReturnValue(Device->ZeDeviceProperties->physicalEUSimdWidth / 8);
+    return ReturnValue(uint32_t{1});
   case UR_DEVICE_INFO_NATIVE_VECTOR_WIDTH_HALF:
   case UR_DEVICE_INFO_PREFERRED_VECTOR_WIDTH_HALF:
     // Must return 0 for *vector_width_half* if the device does not have fp16.
     if (!(Device->ZeDeviceModuleProperties->flags & ZE_DEVICE_MODULE_FLAG_FP16))
       return ReturnValue(uint32_t{0});
-    return ReturnValue(Device->ZeDeviceProperties->physicalEUSimdWidth / 2);
+    return ReturnValue(uint32_t{8});
   case UR_DEVICE_INFO_MAX_NUM_SUB_GROUPS: {
     // Max_num_sub_Groups = maxTotalGroupSize/min(set of subGroupSizes);
     uint32_t MinSubGroupSize =