Fix kmeans init dead loop when dist is inf

[chasingegg]

/kind bug

Close #575

[mergify]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.04%. Comparing base (3c46f4c) to head (8b28f64).
Report is 44 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##           main     #574       +/-   ##
=========================================
+ Coverage      0   70.04%   +70.04%     
=========================================
  Files         0       67       +67     
  Lines         0     4597     +4597     
=========================================
+ Hits          0     3220     +3220     
- Misses        0     1377     +1377     

see 67 files with indirect coverage changes

[foxspy]

/lgtm

[sre-ci-robot]

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