util: inspect: do not crash on Symbol function names

[ljharb]

See #56570 - this avoids a crash when a Function name is a Symbol.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/64460/ 💚

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.19%. Comparing base (9230f22) to head (6932162).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #56572      +/-   ##
==========================================
+ Coverage   89.17%   89.19%   +0.01%     
==========================================
  Files         662      662              
  Lines      191761   191762       +1     
  Branches    36905    36919      +14     
==========================================
+ Hits       171006   171038      +32     
+ Misses      13620    13567      -53     
- Partials     7135     7157      +22     

Files with missing lines	Coverage Δ
lib/internal/util/inspect.js	99.95% <100.00%> (+0.04%)	⬆️

... and 25 files with indirect coverage changes

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/64463/