fix: Make PathContent's path non-nullable

[spalmurray-codecov]

Makes PathContent's path attribute non-nullable. Was doing a TS conversion in Gazebo and noticed this was nullable, but upon checking the types in the resolver, path will always be defined.

[codecov-notifications]

Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

📢 Thoughts on this report? Let us know!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.92%. Comparing base (8ed03b4) to head (8b5f6a8).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1174   +/-   ##
=======================================
  Coverage   95.92%   95.92%           
=======================================
  Files         492      492           
  Lines       16876    16876           
=======================================
  Hits        16188    16188           
  Misses        688      688           

Flag	Coverage Δ
unit	95.92% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.