fix oneway processing to apply to all graphs

[mpadge]

... not just bicycle weighting; fixes #327

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 93.65%. Comparing base (6775463) to head (fe9f911).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
R/weight-streetnet-times.R	80.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #328      +/-   ##
==========================================
- Coverage   93.71%   93.65%   -0.07%     
==========================================
  Files          52       52              
  Lines        6940     6728     -212     
==========================================
- Hits         6504     6301     -203     
+ Misses        436      427       -9     

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