[build-tools] Auto-upload embedded bundle after build when opt-in flag is set

[gwdp]

Why

After a native build completes, the JS bundle embedded in the artifact isn't registered with EAS Update, so the diff worker has no base to patch against — the first OTA after install always downloads the full bundle. This phase registers it automatically so patch-based updates work from day one.

Ref ENG-21033

How

• New uploadEmbeddedBundleAsync in packages/build-tools/src/utils/expoUpdatesEmbedded.ts
• After UPLOAD_APPLICATION_ARCHIVE, both iOS and Android builders check EAS_UPDATE_EXPERIMENTAL_UPLOAD_EMBEDDED_BUNDLE and isEASUpdateConfigured before entering the new UPLOAD_EMBEDDED_BUNDLE phase
• Opens the build artifact (IPA / APK / AAB) with StreamZip, extracts main.jsbundle + app.manifest (iOS) or index.android.bundle + assets/app.manifest (Android) to a temp dir, then calls eas update:embedded:upload
• Failures are non-fatal: logged as warnings so the build result is unaffected
• Added UPLOAD_EMBEDDED_BUNDLE phase to BuildPhase enum, display names, and website IDs

Test Plan

• yarn tsc --noEmit && yarn lint && yarn fmt:check pass on packages/eas-cli and packages/build-tools

[linear]

ENG-21033

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.98%. Comparing base (de82930) to head (14e0f7c).

Additional details and impacted files

@@                             Coverage Diff                              @@
##           gwdp/embedded-update-upload-cmd-skeleton    #3767      +/-   ##
============================================================================
+ Coverage                                     56.91%   56.98%   +0.07%     
============================================================================
  Files                                           908      910       +2     
  Lines                                         39210    39298      +88     
  Branches                                       8187     8210      +23     
============================================================================
+ Hits                                          22314    22389      +75     
- Misses                                        15426    15438      +12     
- Partials                                       1470     1471       +1     

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[gwdp]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• [eas-cli] Add eas update:embedded:list command #3722
• [eas-cli] Add eas update:embedded:view command #3721
• [build-tools] Auto-upload embedded bundle after build when opt-in flag is set #3767 👈 (View in Graphite)
• [eas-cli] Add eas update:embedded:upload command #3720
• main

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[github-actions]

✅ Thank you for adding the changelog entry!