Remove Cython any resource helper

[bdice]

Description

Remove the Cython-only make_any_device_resource helper after RMM has migrated to direct any_resource[device_accessible](...) construction.

This is a follow-up to #2436.

This depends on the downstream migrations completing first:

• Remove RMM make_any_device_resource helper usage cuml#8197
• Remove RMM make_any_device_resource helper usage rapidsmpf#1076

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

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📝 Walkthrough

Walkthrough

This PR replaces the make_any_device_resource helper function with direct any_resource[device_accessible] construction across Cython bindings. It adds a new constructor overload for any_resource accepting device_async_resource_ref, then systematically migrates DeviceBuffer and all memory resource adaptors (Pool, Arena, FixedSize, Binning, and wrapper adaptors) to use the new pattern.

Changes

Device Resource Any-Resource Constructor Refactoring

Layer / File(s)	Summary
Cython contract: any_resource device_async_resource_ref constructor python/rmm/rmm/librmm/memory_resource.pxd	Adds a new non-throwing constructor overload for any_resource[Properties] that accepts device_async_resource_ref, enabling direct construction from the wrapper type.
DeviceBuffer resource construction migration python/rmm/rmm/pylibrmm/device_buffer.pyx	Updates module-level imports to bring in any_resource and device_accessible instead of make_any_device_resource, then replaces the helper calls with any_resource[device_accessible](self.mr.get_mr()) in DeviceBuffer.__cinit__.
Memory resource adaptors: bulk migration to any_resource python/rmm/rmm/pylibrmm/memory_resource/_memory_resource.pyx	Extends C++ cimports to include any_resource and device_accessible, then replaces make_any_device_resource(...) with any_resource[device_accessible](...) across Pool, Arena, FixedSize, Binning, Limiting, Logging, Statistics, Tracking, FailureCallback, and Prefetch adaptor __cinit__ methods, plus the set_per_device_resource registration function.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Possibly related issues

• rapidsai/rmm#2434: Implements the goal of removing the make_any_device_resource helper and constructing any_resource directly from device_async_resource_ref.

Possibly related PRs

• rapidsai/rmm#2349: The Cython additions of a device_async_resource_ref constructor overload for any_resource align with the C++ fix to rework cccl_async_resource_ref so any_resource type-erasure stores the underlying resource rather than the wrapper.

Suggested labels

non-breaking, improvement

Suggested reviewers

• rongou
• davidwendt
• ttnghia

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'Remove Cython any resource helper' directly and clearly describes the main objective of the pull request—removing a Cython helper function after migration to direct any_resource construction.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description check	✅ Passed	The PR description clearly explains the purpose: removing a Cython helper after migration to direct any_resource[device_accessible](...) construction, with context about dependencies and related PRs.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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