*: fix TestV2DeprecationSnapshotMatches case

[fuweid]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.46%. Comparing base (142c534) to head (bf0d6d5).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

Files with missing lines	Coverage Δ
server/etcdserver/api/membership/cluster.go	88.08% <100.00%> (ø)
server/etcdserver/api/membership/storev2.go	59.03% <100.00%> (ø)

... and 18 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #21144      +/-   ##
==========================================
- Coverage   68.46%   68.46%   -0.01%     
==========================================
  Files         429      429              
  Lines       35242    35242              
==========================================
- Hits        24130    24128       -2     
- Misses       9723     9728       +5     
+ Partials     1389     1386       -3     

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