[Kyle-Ye]

Summary

Follow up of #1232

• Fix Example build failures caused by ambiguous @Observable macros when both Observation and OpenObservation are in scope.
• Use OpenObservation::Observable or Observation::Observable for the active configuration in Example models and the observation interaction test.

Validation

• Both Example configurations build on iOS Simulator, macOS, and visionOS Simulator with Xcode 26.6.
• The focused iOS UI and observation interaction tests pass with existing references, including counter updates from 0 to 1 to 2.
• The macOS UI test target and both observation interaction test configurations compile successfully.

Fixes #1235

[Kyle-Ye]

/uitest ios osui-iag

[tuist]

🛠️ Tuist Run Report 🛠️

Tests 🧪

Scheme	Status	Ran test modules	Commit
OpenSwiftUI	✅	7	6e0a5d3f9

Builds 🔨

Scheme	Status	Duration	Commit
OpenSwiftUI	✅	44.3s	6e0a5d3f9

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 31.35%. Comparing base (14d2285) to head (a62441a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1236   +/-   ##
=======================================
  Coverage   31.35%   31.35%           
=======================================
  Files         982      982           
  Lines       80761    80761           
=======================================
+ Hits        25320    25323    +3     
+ Misses      55441    55438    -3     

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