[ENG-14204][eas-cli] UX improvements for env:list command

[szdziedzic]

Why

Currently using the env:list command is confusing and annoying with this multi-select for environments and too noisy when an env var is secret or sensitive

How

Make it less noisy.

Just use select for environment vs multi-select.

Test Plan

Tested it manually

[szdziedzic]

• #2697 👈 (View in Graphite)
• main

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[github-actions[bot]]

Size Change: +790 B (0%)

Total Size: 52.9 MB

Filename	Size	Change
./packages/eas-cli/dist/eas-linux-x64.tar.gz	52.9 MB	+790 B (0%)

_{compressed-size-action}

[github-actions[bot]]

Subscribed to pull request	File Patterns	Mentions
**/*	@khamilowicz, @sjchmiela

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[linear[bot]]

ENG-14204 Use select vs multi-select for `--environment` in EAS CLI commands

[github-actions[bot]]

❌ It looks like a changelog entry is missing for this PR. Add it manually to CHANGELOG.md. ⏩ If this PR doesn't require a changelog entry, such as if it's an internal change that doesn't affect the user experience, you can add the "no changelog" label to the PR.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 48.71795% with 20 lines in your changes missing coverage. Please review.

Project coverage is 52.94%. Comparing base (fed28a8) to head (befc501).

Files with missing lines	Patch %	Lines
packages/eas-cli/src/commands/env/list.ts	60.00%	12 Missing :warning:
packages/eas-cli/src/utils/variableUtils.ts	11.12%	8 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2697 +/- ## ========================================== - Coverage 52.96% 52.94% -0.01% ========================================== Files 576 576 Lines 22095 22097 +2 Branches 4334 4335 +1 ========================================== - Hits 11701 11698 -3 - Misses 10360 10366 +6 + Partials 34 33 -1 ```

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