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

[gwdp]

Why

Lets users inspect an embedded update they've uploaded from the CLI. Pairs with the server query in expo/universe#27769. Ref ENG-21467.

How

Mirrors eas update:embedded:upload / :delete. --json round-trips the raw embedded-update payload; otherwise prints a formatted table. NOT_FOUND on either unknown id or cross-app surfaces a friendly message.

Query wrapper uses inline types + eslint-disable graphql/template-strings until the server query merges and codegen regenerates generated.ts. Marked draft until then.

Test Plan

yarn tsc --noEmit, yarn lint clean. 4 unit tests: success, --json, NOT_FOUND, unexpected rethrow.

[github-actions]

✅ Thank you for adding the changelog entry!

[codecov]

Codecov Report

❌ Patch coverage is 84.61538% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 57.49%. Comparing base (2c1837f) to head (c8c67e8).

Files with missing lines	Patch %	Lines
...eas-cli/src/graphql/queries/EmbeddedUpdateQuery.ts	45.46%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3810      +/-   ##
==========================================
+ Coverage   57.46%   57.49%   +0.03%     
==========================================
  Files         911      913       +2     
  Lines       39480    39519      +39     
  Branches     8271     8276       +5     
==========================================
+ Hits        22684    22717      +33     
- Misses      15328    15334       +6     
  Partials     1468     1468              

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