chore: keep the large vectors

[BubbleCal]

related #4842
In #4890, we filter out the large vectors, this PR reverts that and try best to retrieve the large vectors:

• if 2 vectors are both large but close to each other, the distance can be finite, so we can retrieve them
• if 2 vectors are both large and the distance is infinite, we just return them in random order

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.61%. Comparing base (437e7f5) to head (e114883).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4914      +/-   ##
==========================================
- Coverage   81.61%   81.61%   -0.01%     
==========================================
  Files         333      333              
  Lines      131411   131406       -5     
  Branches   131411   131406       -5     
==========================================
- Hits       107257   107245      -12     
- Misses      20556    20563       +7     
  Partials     3598     3598              

Flag	Coverage Δ
unittests	81.61% <100.00%> (-0.01%)	⬇️

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[Baibaiwuguo]

@BubbleCal
hello. To avoid the situation where the denominator of the cosine is 0, could we consider adding a small positive number through dynamic setting？