Connect buffer wrapper no_init; Use hints only for for_each

[danhoeflinger]

Connect no_init property to sycl buffer accessors for buffer wrappers.

Use hints from begin/end only for for_each APIs. Fully remove make_iter_mode resolution (ignore hints for all other APIs).

[danhoeflinger]

/clang-format

[danhoeflinger]

#2550 Need to address (2) from this issue.

Update: done

[Copilot]

Pull request overview

This PR wires a no_init flag through SYCL buffer range wrappers (so algorithms can request no_init when creating accessors) and narrows iterator “user hint” handling so that begin/end hint resolution is applied only for for_each/for_each_n (sync + async), while removing the prior make_iter_mode-based resolution elsewhere.

Changes:

• Add _NoInit to __ranges::all_view and propagate it into accessor creation via sycl::property_list.
• Introduce __pattern_for_each / __pattern_for_each_n (and async variants) that defer to sycl_iterator embedded access hints; update glue to call these new patterns.
• Remove iter_mode_resolver / make_iter_mode infrastructure from the SYCL backend and stop using it in algorithms.

Reviewed changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
include/oneapi/dpl/pstl/hetero/dpcpp/utils_ranges_sycl.h	Adds _NoInit to all_view, plumbs properties into accessor creation, and implements “defer to user hint” mode resolution for for_each.
include/oneapi/dpl/pstl/hetero/dpcpp/parallel_backend_sycl.h	Removes iter_mode_resolver / make_iter_mode implementation.
include/oneapi/dpl/pstl/hetero/algorithm_impl_hetero.h	Adds hetero __pattern_for_each(_n) wrappers that enable hint resolution only for for_each APIs; removes make_iter_mode call sites.
include/oneapi/dpl/pstl/glue_algorithm_impl.h	Routes for_each / for_each_n to the new __pattern_for_each(_n) entry points.
include/oneapi/dpl/pstl/algorithm_impl.h	Adds generic (non-hetero) __pattern_for_each(_n) wrappers that forward to existing walk1 patterns.
include/oneapi/dpl/pstl/algorithm_fwd.h	Adds forward declarations for __pattern_for_each and __pattern_for_each_n.
include/oneapi/dpl/internal/async_impl/glue_async_impl.h	Updates for_each_async to call __pattern_for_each_async.
include/oneapi/dpl/internal/async_impl/async_impl_hetero.h	Adds hetero __pattern_for_each_async wrapper enabling hint resolution; removes make_iter_mode usage in async fill.
include/oneapi/dpl/experimental/kt/internal/esimd_radix_sort_utils.h	Updates helper overload to match the new all_view template parameter list.

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