fix: fix contrib registry eureka watcher as *watcher

[yonwoo9]

Description (what this PR does / why we need it):

modify contrib registry eureka watcher as *watcher, defer ticker stop

Which issue(s) this PR fixes (resolves / be part of):

Other special notes for the reviewers:

[codecov-commenter]

Codecov Report

Merging #2693 (0be2e66) into main (c65f823) will not change coverage.
The diff coverage is n/a.

❗ Current head 0be2e66 differs from pull request most recent head 7dd65c9. Consider uploading reports for the commit 7dd65c9 to get more accurate results

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@@           Coverage Diff           @@
##             main    #2693   +/-   ##
=======================================
  Coverage   84.88%   84.88%           
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  Files          88       88           
  Lines        3889     3889           
=======================================
  Hits         3301     3301           
  Misses        413      413           
  Partials      175      175           

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