feat(state): add ObservableLocation

[Kyle-Ye]

Summary

• Add ObservableLocation with weak observers and shared transaction dispatch.
• Preserve transaction IDs from the calling thread through stored and observable location commits.
• Invalidate live observer signals and remove expired signals after updates.
• Run macOS, iOS, and Ubuntu tests for pull requests targeting any branch.

[tuist]

🛠️ Tuist Run Report 🛠️

Tests 🧪

Scheme	Status	Cache hit rate	Tests	Skipped	Ran	Commit
OpenSwiftUI	✅	0 %	1136	0	1136	ad01f7719

Builds 🔨

Scheme	Status	Duration	Commit
OpenSwiftUI	✅	1m 32s	ad01f7719

[codecov]

Codecov Report

❌ Patch coverage is 0% with 34 lines in your changes missing coverage. Please review.
✅ Project coverage is 17.13%. Comparing base (d729e5b) to head (6a917d9).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...es/OpenSwiftUICore/Data/State/StoredLocation.swift	0.00%	34 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (d729e5b) and HEAD (6a917d9). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (d729e5b)	HEAD (6a917d9)
	2	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1047       +/-   ##
===========================================
- Coverage   29.56%   17.13%   -12.43%     
===========================================
  Files         783      735       -48     
  Lines       61627    53936     -7691     
===========================================
- Hits        18221     9244     -8977     
- Misses      43406    44692     +1286     

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