fix: flyteadmin doesn't shutdown servers gracefully

[lowc1012]

Tracking issue

#6274

Why are the changes needed?

What changes were proposed in this pull request?

How was this patch tested?

Labels

Please add one or more of the following labels to categorize your PR:

• added: For new features.
• changed: For changes in existing functionality.
• deprecated: For soon-to-be-removed features.
• removed: For features being removed.
• fixed: For any bug fixed.
• security: In case of vulnerabilities

This is important to improve the readability of release notes.

Setup process

Screenshots

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

[flyte-bot]

Code Review Agent Run Status

• Limitations and other issues: ❌ Failure - The AI Code Review Agent skipped reviewing this change because it is configured to exclude certain pull requests based on the source/target branch or the pull request status. You can change the settings here, or contact the agent instance creator at [email protected].

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 34 lines in your changes missing coverage. Please review.

Project coverage is 33.82%. Comparing base (588ceec) to head (a264c15).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
flyteadmin/pkg/server/service.go	0.00%	34 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master    #6289       +/-   ##
===========================================
- Coverage   50.37%   33.82%   -16.56%     
===========================================
  Files        1170     1329      +159     
  Lines       92851   147835    +54984     
===========================================
+ Hits        46774    49999     +3225     
- Misses      41931    92994    +51063     
- Partials     4146     4842      +696     

Flag	Coverage Δ
unittests-datacatalog	48.01% <ø> (-3.58%)	⬇️
unittests-flyteadmin	50.06% <0.00%> (-1.82%)	⬇️
unittests-flytecopilot	30.99% <ø> (ø)
unittests-flytectl	58.09% <ø> (-4.24%)	⬇️
unittests-flyteidl	6.78% <ø> (?)
unittests-flyteplugins	49.01% <ø> (-5.13%)	⬇️
unittests-flytepropeller	36.52% <ø> (-6.34%)	⬇️
unittests-flytestdlib	50.38% <ø> (-4.95%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

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