fix `AttractorsViaProximity` with `Inf` trajectories

[Datseris]

• Pre-emtivively check for Inf
• Use always_false from nearest neighbors for better performance

[codecov-commenter]

Codecov Report

Merging #108 (7d74a7f) into main (b273166) will increase coverage by 0.01%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #108      +/-   ##
==========================================
+ Coverage   84.56%   84.57%   +0.01%     
==========================================
  Files          23       23              
  Lines        1192     1193       +1     
==========================================
+ Hits         1008     1009       +1     
  Misses        184      184              

Files	Coverage Δ
src/mapping/attractor_mapping_proximity.jl	76.56% <100.00%> (+0.37%)	:arrow_up:

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[Datseris]

@reykboerner you can give an approving review to this PR so we can merge it.