fix(shorebird_cli): use release mach-o artifact instead of patch mach-o artifact as base for linking

[bryanoltman]

Description

shorebird patch ios-alpha --use-linker is currently linking an AOT snapshot produced from a patch build against the patch mach-o binary. This change fixes this, to make shorebird patch ios-alpha --use-linker download the release artifact and use that as a base for linking.

An example invocation of the link command with this change:

dart /Users/bryanoltman/shorebirdtech/dart-sdk/sdk/pkg/aot_tools/bin/aot_tools.dart link --debug --base=/var/folders/vn/04w25hyn3cg8436mp3qhhv8m0000gn/T/1ZzqC0/Products/Applications/Runner.app/Frameworks/App.framework/App --patch=/Users/bryanoltman/Documents/sandbox/new_app/build/out.aot --analyze-snapshot=/Users/bryanoltman/shorebirdtech/engine/src/out/ios_release/clang_x64/analyze_snapshot_arm64

Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🛠️ Bug fix (non-breaking change which fixes an issue)
• ❌ Breaking change (fix or feature that would cause existing functionality to change)
• 🧹 Code refactor
• ✅ Build configuration change
• 📝 Documentation
• 🗑️ Chore

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (6fa62ba) 100.00% compared to head (aabe321) 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              main     #1546   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          154       154           
  Lines         4760      4766    +6     
=========================================
+ Hits          4760      4766    +6     

Flag	Coverage Δ
shorebird_cli	100.00% <100.00%> (ø)

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