chore: align reloader test with volume watcher interface

[leon-ape]

No description provided.

[apecloud-bot]

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Usage:
  - /nopick: Not auto cherry-pick when PR merged.
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  - /nopick
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[leon-ape]

/nopick

[leon-ape]

/approve

[leon-ape]

/approve

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 53.84%. Comparing base (dd251bd) to head (0f6b7bd).
⚠️ Report is 10 commits behind head on release-1.0.

Additional details and impacted files

@@               Coverage Diff               @@
##           release-1.0   #10096      +/-   ##
===============================================
+ Coverage        53.70%   53.84%   +0.13%     
===============================================
  Files              493      493              
  Lines            54871    54885      +14     
===============================================
+ Hits             29471    29551      +80     
+ Misses           22453    22380      -73     
- Partials          2947     2954       +7     

Flag	Coverage Δ
unittests	53.84% <ø> (+0.13%)	⬆️

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[leon-ape]

/recheck-cla

[github-actions]

Recheck CLA triggered.