fix experience with validating metro config in non-interactive mode

[dsokal]

Checklist

• I've added an entry to CHANGELOG.md if necessary.
• I've tagged the changelog entry with [EAS BUILD API] if it's a part of a breaking change to EAS Build API (only possible when updating @expo/eas-build-job package).

Why

Fixes #643

How

Check if running in non-interactive mode and proceed even if the metro config seems invalid

Test Plan

[github-actions]

Size Change: -809 B (0%)

Total Size: 27 MB

Filename	Size	Change
./packages/eas-cli/dist/eas-linux-x64.tar.gz	27 MB	-809 B (0%)

_{compressed-size-action}

[codecov]

Codecov Report

Merging #644 (120828a) into main (0bce278) will decrease coverage by 0.02%.
The diff coverage is 12.50%.

@@            Coverage Diff             @@
##             main     #644      +/-   ##
==========================================
- Coverage   48.77%   48.75%   -0.01%     
==========================================
  Files         304      304              
  Lines       10492    10497       +5     
  Branches     1981     1983       +2     
==========================================
+ Hits         5116     5117       +1     
- Misses       5371     5375       +4     
  Partials        5        5              

Impacted Files	Coverage Δ
packages/eas-cli/src/project/metroConfig.ts	14.64% <12.50%> (+0.75%)	⬆️

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[bensig]

Thank you @dsokal!