[eas-cli] Add eas update:upload-embedded command

[gwdp]

Why

EAS Update bundle diffing can't generate patches against the JS bundle embedded in a native build, so the first OTA after install always downloads the full bundle. This command registers the embedded bundle with EAS Update so the diff worker can use it as a patch base.

Ref ENG-21033

How

• New eas update:upload-embedded command with --platform, --bundle, --manifest, --channel, and optional --build-id / --json flags
• Reads app.manifest to extract the embedded update UUID and validates it
• Resolves runtimeVersion via the same helper eas update uses
• Gets a presigned URL via getSignedEmbeddedUpdateAssetUploadSpecifications (passing embeddedUpdateId), uploads the bundle
• Calls uploadEmbeddedUpdate with embeddedUpdateId, channel name, runtimeVersion, and platform — server resolves the asset from the UUID directly, no channel FK lookup needed
• Retries on EMBEDDED_UPDATE_ASSET_NOT_READY (GCS finalization race) with exponential backoff; exits immediately on EMBEDDED_UPDATE_CONFLICT

Test Plan

• yarn jest src/commands/update/__tests__/upload-embedded.test.ts — 19 tests pass
• yarn tsc && yarn lint pass (4 GQL lint errors pre-existing; embedded update schema not yet merged to eas-cli)

[github-actions]

✅ Thank you for adding the changelog entry!

[gwdp]

• [eas-cli] Add eas update:list-embedded command #3722
• [eas-cli] Add eas update:view-embedded command #3721
• [eas-cli] Add eas update:upload-embedded command #3720 👈 (View in Graphite)
• main

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[linear]

ENG-21033