[theeket]

Summary:

Addresses the React Dependencies and Core framework symlink corruption reported in #55540.

Mac Catalyst frameworks use a versioned bundle layout (as macOS): the framework binary and Resources point into Versions/Current, which points to the actual version directory. These symlinks must survive packaging. Although the local build scripts (including local-generated .tar.gz) work correctly, all the maven publishing have broken Mac Catalyst slice.

The correct framework → artifact upload loses symlinks → download
→ compose XCFramework → tar.gz → Maven

Now, both iOS prebuild workflows upload raw Build/Products directories. GH's artifact ZIP writer explicitly resolves symlinks with realpath() and stores their targets as ordinary files. (See implementation) So, the final .tar.gz archives faithfully package that already-damaged layout, and Maven publishes those archives.

• Dependencies slice upload
• Core slice upload

The problem predates the reported 0.84: published dependency archives inspected from 0.79.2, 0.83.0, 0.84.0, and 0.88.1 all lack Catalyst symlinks. The inspected 0.88.1 React Core archive has the same problem.

Hermes already protects this handoff with a “Compress slices to preserve Symlinks” step. This PR follows the archive-before-upload approach to React Native's workflows.

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Changes in prebuild-ios-core.yml and prebuild-ios-dependencies.yml:

• Archive slice products before upload, including products restored from cache; extract them before XCFramework composition.
• Check the Catalyst binary, Resources, and Versions/Current symlinks before final packaging.
• Bump composed-artifact cache keys so previous damaged archives cannot bypass the fix.

Incorrect (Resolved to file)	Correct (Preserve symlinks)

Changelog:

[IOS] [FIXED] - Preserve Mac Catalyst framework symlinks in published React Native prebuild artifacts.

Test Plan:

(Update) Prebuilt frameworks test passed, and have correct symlinks

React Dependencies: Debug, Release
React Core: Debug, Release

Composed XCFramework: Debug, Release