[SYCL][UR] Move max_global_work_groups query to UR

[uditagarwal97]

This PR makes the following changes:

1. Moves implementation of max_global_work_groups to UR. This query has been implemented in SYCL RT because there's no backend support for max_global_work_groups query. However, it was recently decided that OpenCL will add a corresponding query. See CMPLRLLVM-73572 for more info.
2. Changes max_global_work_groups from INT_MAX to SIZE_MAX for all backends. For CUDA, HIP, OFFLOAD, and L0 adapter, we calculate the value of max_global_work_groups by taking minimum of SIZE_MAX and multiplication of per-dimension max group size.
3. Changed max_work_groups<3> so that max_global_work_groups no longer limits per-dimension max work group size.

[Copilot]

Pull request overview

This PR moves SYCL’s ext::oneapi::experimental::info::device::max_global_work_groups query from being handled in the SYCL runtime to being surfaced as a Unified Runtime (UR) urDeviceGetInfo property (UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS) and wires it through adapters, printing utilities, and conformance tooling.

Changes:

• Adds UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS to UR API surface (YAML + generated header) and to UR printing / urinfo output.
• Implements UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS handling across multiple UR adapters (OpenCL, CUDA, HIP, Level Zero, Offload; NativeCPU reports unsupported).
• Updates SYCL device trait mapping + return type mapping and switches SYCL device_impl to query UR for max_global_work_groups.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
unified-runtime/tools/urinfo/urinfo.hpp	Adds printing of UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS in urinfo.
unified-runtime/test/conformance/device/urDeviceGetInfo.cpp	Adds conformance test coverage for the new device info query.
unified-runtime/source/adapters/opencl/device.cpp	Adds adapter support for UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS.
unified-runtime/source/adapters/offload/device.cpp	Adds adapter support for UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS and includes <limits>.
unified-runtime/source/adapters/native_cpu/device.cpp	Marks UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS as unsupported.
unified-runtime/source/adapters/level_zero/device.cpp	Adds adapter support for UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS.
unified-runtime/source/adapters/hip/device.cpp	Adds adapter support for UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS.
unified-runtime/source/adapters/cuda/device.cpp	Adds adapter support for UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS.
unified-runtime/scripts/core/device.yml	Adds the new device info enumerator to the UR spec YAML.
unified-runtime/include/unified-runtime/ur_print.hpp	Adds enum-to-string and tagged printing support for the new device info.
unified-runtime/include/unified-runtime/ur_api.h	Adds UR_DEVICE_INFO_MAX_GLOBAL_WORK_GROUPS to ur_device_info_t.
sycl/source/detail/ur_device_info_ret_types.inc	Maps the new UR device info to size_t for SYCL’s UR return-type machinery.
sycl/source/detail/device_impl.hpp	Switches SYCL to query UR for max_global_work_groups and adjusts max_work_groups<3> behavior.
sycl/include/sycl/info/ext_oneapi_device_traits.def	Maps max_global_work_groups to the new UR device info enumerator.

[iclsrc]

This PR moves the max_global_work_groups device query out of the SYCL RT into UR adapters, which is a nice cleanup. The approach is sound, but there is one compilation-breaking typo in the offload adapter that must be fixed before merging. A few smaller issues noted below.