Use clean install, vs. install for npm dependencies in cargo.

[jsuereth]

This will avoid recreating the package-lock.json file. Folks working on the UI will need to run manually to update dependencies in the build.

cc @jerbly

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.1%. Comparing base (cfc4c14) to head (750a5fa).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #1124   +/-   ##
=====================================
  Coverage   79.1%   79.1%           
=====================================
  Files        102     102           
  Lines       7952    7952           
=====================================
  Hits        6294    6294           
  Misses      1658    1658           

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[jerbly]

LGTM