env:pull uses local values of encrypted variables

[khamilowicz]

Why

ENG-13929: eas env:pull overwrites all variables

env:pull should not overwrite existing values for encrypted variables, but leave them in .env.local.

Test Plan

Tested manually

[linear]

ENG-13929 eas env:pull overwrites all variables

[github-actions]

Subscribed to pull request

File Patterns	Mentions
**/*	@szdziedzic, @sjchmiela

Generated by CodeMention

[github-actions]

Size Change: +501 B (0%)

Total Size: 53 MB

Filename	Size	Change
./packages/eas-cli/dist/eas-linux-x64.tar.gz	53 MB	+501 B (0%)

_{compressed-size-action}

[codecov]

Codecov Report

Attention: Patch coverage is 13.33333% with 13 lines in your changes missing coverage. Please review.

Project coverage is 52.91%. Comparing base (a212662) to head (d41ee53).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/eas-cli/src/commands/env/pull.ts	13.34%	13 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2656      +/-   ##
==========================================
- Coverage   53.01%   52.91%   -0.10%     
==========================================
  Files         567      570       +3     
  Lines       21647    21750     +103     
  Branches     4242     4263      +21     
==========================================
+ Hits        11474    11506      +32     
- Misses      10143    10213      +70     
- Partials       30       31       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[github-actions]

⏩ The changelog entry check has been skipped since the "no changelog" label is present.