Improve performance of converting URL to a string

[bdraco]

This is effectively the same optimization as done in #1168 for the internal _port_not_default cached property. If port is not already cached, we avoid one property lookup.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.56%. Comparing base (bb3c41f) to head (0ac9ced).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1170   +/-   ##
=======================================
  Coverage   95.55%   95.56%           
=======================================
  Files          30       30           
  Lines        4909     4917    +8     
  Branches      446      446           
=======================================
+ Hits         4691     4699    +8     
  Misses        192      192           
  Partials       26       26           

Flag	Coverage Δ
CI-GHA	95.52% <100.00%> (+<0.01%)	⬆️
MyPy	42.13% <27.27%> (-0.08%)	⬇️
OS-Linux	99.41% <100.00%> (+<0.01%)	⬆️
OS-Windows	99.50% <100.00%> (+<0.01%)	⬆️
OS-macOS	99.13% <100.00%> (+<0.01%)	⬆️
Py-3.10.11	99.03% <100.00%> (+<0.01%)	⬆️
Py-3.10.15	99.26% <100.00%> (+<0.01%)	⬆️
Py-3.11.10	99.26% <100.00%> (+<0.01%)	⬆️
Py-3.11.9	99.03% <100.00%> (+<0.01%)	⬆️
Py-3.12.6	99.26% <100.00%> (+<0.01%)	⬆️
Py-3.13.0-rc.2	99.26% <100.00%> (+<0.01%)	⬆️
Py-3.13.0-rc.3	?
Py-3.8.10	98.98% <100.00%> (+<0.01%)	⬆️
Py-3.8.18	99.20% <100.00%> (+<0.01%)	⬆️
Py-3.9.13	98.98% <100.00%> (+<0.01%)	⬆️
Py-3.9.20	99.20% <100.00%> (+<0.01%)	⬆️
Py-pypy7.3.11	99.26% <100.00%> (+<0.01%)	⬆️
Py-pypy7.3.16	99.26% <100.00%> (+<0.01%)	⬆️
Py-pypy7.3.17	99.29% <100.00%> (+<0.01%)	⬆️
VM-macos-latest	99.13% <100.00%> (+<0.01%)	⬆️
VM-ubuntu-latest	99.41% <100.00%> (+<0.01%)	⬆️
VM-windows-latest	99.50% <100.00%> (+<0.01%)	⬆️
pytest	99.41% <100.00%> (+<0.01%)	⬆️

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.