fix: update faiss hnsw unit test for compatibility

[foxspy]

/kind improvement

[sre-ci-robot]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 74.35%. Comparing base (3c46f4c) to head (8daece6).
Report is 240 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##           main     #934       +/-   ##
=========================================
+ Coverage      0   74.35%   +74.35%     
=========================================
  Files         0       82       +82     
  Lines         0     6508     +6508     
=========================================
+ Hits          0     4839     +4839     
- Misses        0     1669     +1669     

see 82 files with indirect coverage changes

[alexanderguzhva]

/lgtm