refactor(eas-cli): simplify the output of eas deploy --json

[byCedric]

Why

The initial version was a bit conservative, nesting objects to not mix dashboardUrl with deployments. This change flattens the deployment object into the root object when running with --json.

How

• Flattened the deployment object into the root object when running eas deploy --json

Test Plan

[github-actions]

✅ Thank you for adding the changelog entry!

[github-actions]

Size Change: -2.06 kB (0%)

Total Size: 52.9 MB

Filename	Size	Change
./packages/eas-cli/dist/eas-linux-x64.tar.gz	52.9 MB	-2.06 kB (0%)

_{compressed-size-action}

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 10 lines in your changes missing coverage. Please review.

Project coverage is 52.00%. Comparing base (2e002ad) to head (4ac8777).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/eas-cli/src/worker/utils/logs.ts	0.00%	9 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2596      +/-   ##
==========================================
- Coverage   52.01%   52.00%   -0.01%     
==========================================
  Files         562      562              
  Lines       21189    21194       +5     
  Branches     4332     4335       +3     
==========================================
  Hits        11020    11020              
- Misses       9288     9292       +4     
- Partials      881      882       +1     

Flag	Coverage Δ
	52.00% <0.00%> (-0.01%)	⬇️

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