Fix IndirectOptional wrappedValue setter

[Kyle-Ye]

Summary

• Add missing wrappedValue setter to IndirectOptional, enabling mutation through the computed property
• Add test cases for IndirectOptional covering init variants, getter/setter, and Equatable/Hashable conformance

Test plan

• wrappedValue setter: none→some, some→some, some→none transitions
• wrappedValue getter for .some and .none
• All init variants (value, nilLiteral, wrappedValue)
• Equatable and Hashable conformance

[augmentcode]

🤖 Augment PR Summary

Summary: This PR fixes mutation support for IndirectOptional by adding a missing setter to its wrappedValue computed property.

Changes:

• Converted `IndirectOptional.wrappedValue` from a read-only computed property into a get/set property
• Setter updates `self` to `.some` or `.none` based on the assigned `Optional` value
• Added a dedicated test suite for `IndirectOptional` covering init variants and getter/setter transitions
• Added conformance coverage tests for `Equatable` and `Hashable` behavior

Technical Notes: The new setter enables mutation via wrappedValue (including none↔some transitions) which previously was not possible through the computed property.

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[augmentcode]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 13.72%. Comparing base (415b75e) to head (42c8f75).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #802      +/-   ##
==========================================
+ Coverage   13.67%   13.72%   +0.04%     
==========================================
  Files         622      622              
  Lines       37149    37153       +4     
==========================================
+ Hits         5081     5099      +18     
+ Misses      32068    32054      -14     

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