refactor: use WeakAttribute.base directly

[Kyle-Ye]

Summary

• Update the OpenAttributeGraph and DarwinPrivateFrameworks revisions to include public WeakAttribute.base access.
• Remove redundant weak attribute conversions in GraphHost.asyncTransaction and WeakAttribute.uncheckedIdentifier by accessing base directly.

Validation

Standalone clients compiled successfully with OpenAttributeGraph and AttributeGraph. The AttributeGraph client also linked successfully.

Dependency

• DarwinPrivateFrameworks#71 (merged)
• OpenAttributeGraph#241 (merged)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 29.82%. Comparing base (f8368c4) to head (239e5d0).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
Sources/OpenSwiftUICore/Graph/GraphHost.swift	0.00%	1 Missing ⚠️
...OpenSwiftUICore/Util/AttributeGraphAdditions.swift	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1055      +/-   ##
==========================================
+ Coverage   27.31%   29.82%   +2.50%     
==========================================
  Files         735      783      +48     
  Lines       54011    61727    +7716     
==========================================
+ Hits        14755    18407    +3652     
- Misses      39256    43320    +4064     

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[tuist]

🛠️ Tuist Run Report 🛠️

Tests 🧪

Scheme	Status	Cache hit rate	Tests	Skipped	Ran	Commit
OpenSwiftUI	✅	0 %	1163	0	1163	d0d294961

Builds 🔨

Scheme	Status	Duration	Commit
OpenSwiftUI	✅	57.0s	d0d294961