Allow Windows SessionID=0

[getvictor]

For #25581

Checklist for submitter

• Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes.
• Added/updated automated tests
• Manual QA for all new/changed functionality

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.60%. Comparing base (7a04f87) to head (6e4b385).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #25582   +/-   ##
=======================================
  Coverage   63.60%   63.60%           
=======================================
  Files        1620     1620           
  Lines      155081   155073    -8     
  Branches     4036     4036           
=======================================
- Hits        98637    98632    -5     
+ Misses      48671    48669    -2     
+ Partials     7773     7772    -1     

Flag	Coverage Δ
backend	64.45% <100.00%> (+<0.01%)	⬆️

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