chore: tests don't work on Node 22

[rix0rrr]

Add the disposable symbols polyfill.

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.19%. Comparing base (506ec5a) to head (883e515).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1308   +/-   ##
=======================================
  Coverage   88.19%   88.19%           
=======================================
  Files          73       73           
  Lines       10386    10386           
  Branches     1410     1410           
=======================================
  Hits         9160     9160           
  Misses       1199     1199           
  Partials       27       27           

Flag	Coverage Δ
suite.unit	88.19% <ø> (ø)

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