[PM-14859] Fix double prompt when unlocking by ssh request

[quexten]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-14859

📔 Objective

We were using timeout with the "each" parameter configured instead of "first", leading to multiple prompts. This fixes the behavior.

📸 Screenshots

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 33.44%. Comparing base (a415679) to head (35c18a4).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...desktop/src/platform/services/ssh-agent.service.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #12000   +/-   ##
=======================================
  Coverage   33.44%   33.44%           
=======================================
  Files        2845     2845           
  Lines       89099    89099           
  Branches    16992    16992           
=======================================
  Hits        29803    29803           
  Misses      56950    56950           
  Partials     2346     2346           

☔ View full report in Codecov by Sentry.
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[github-actions]

Checkmarx One – Scan Summary & Details – d290dec9-e1bb-4aa4-baf9-770b026e0af1

No New Or Fixed Issues Found

[quexten]

Merging since the agent is behind a feature flag.