[eas-cli] Fix worker asset upload error not being shown

[kitten]

Why

We accidentally were hiding asset upload errors, which should be shown.

How

Remove code ignoring upload errors accidentally.

Test Plan

Manually tested

[github-actions]

Size Change: -802 B (0%)

Total Size: 52.9 MB

Filename	Size	Change
./packages/eas-cli/dist/eas-linux-x64.tar.gz	52.9 MB	-802 B (0%)

_{compressed-size-action}

[github-actions]

✅ Thank you for adding the changelog entry!

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 52.09%. Comparing base (d42cbe0) to head (19ceb63).

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

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2579   +/-   ##
=======================================
  Coverage   52.09%   52.09%           
=======================================
  Files         559      559           
  Lines       21101    21101           
  Branches     4315     4315           
=======================================
  Hits        10991    10991           
+ Misses       9232     9231    -1     
- Partials      878      879    +1     

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