Improve performance of URL.relative

[bdraco]

Avoid calling SplitResult._replace since its much slower, and instead replace with fast NamedTuple creation tuple.__new__(Type, (...)

[codspeed-hq]

CodSpeed Performance Report

Merging #1319 will improve performances by ×2.1

_{Comparing relative_pref (29ce033) with master (6601ba5)}

Summary

⚡ 1 improvements
✅ 78 untouched benchmarks

Benchmarks breakdown

	Benchmark	master	relative_pref	Change
⚡	test_url_with_path_relative	732.2 µs	354.9 µs	×2.1

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.96%. Comparing base (6601ba5) to head (29ce033).
Report is 131 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1319   +/-   ##
=======================================
  Coverage   95.96%   95.96%           
=======================================
  Files          27       27           
  Lines        5401     5402    +1     
  Branches      329      329           
=======================================
+ Hits         5183     5184    +1     
  Misses        192      192           
  Partials       26       26           

Flag	Coverage Δ
CI-GHA	95.96% <100.00%> (+<0.01%)	⬆️
MyPy	44.60% <100.00%> (+0.01%)	⬆️
OS-Linux	99.31% <100.00%> (+<0.01%)	⬆️
OS-Windows	99.37% <100.00%> (+<0.01%)	⬆️
OS-macOS	99.04% <100.00%> (+<0.01%)	⬆️
Py-3.10.11	99.02% <100.00%> (+<0.01%)	⬆️
Py-3.10.15	99.27% <100.00%> (+<0.01%)	⬆️
Py-3.11.10	99.27% <100.00%> (+<0.01%)	⬆️
Py-3.11.9	99.02% <100.00%> (+<0.01%)	⬆️
Py-3.12.7	99.27% <100.00%> (+<0.01%)	⬆️
Py-3.13.0	99.27% <100.00%> (+<0.01%)	⬆️
Py-3.9.13	98.97% <100.00%> (+<0.01%)	⬆️
Py-3.9.20	99.22% <100.00%> (+<0.01%)	⬆️
Py-pypy7.3.16	99.27% <100.00%> (+<0.01%)	⬆️
Py-pypy7.3.17	99.30% <100.00%> (+<0.01%)	⬆️
VM-macos-latest	99.04% <100.00%> (+<0.01%)	⬆️
VM-ubuntu-latest	99.31% <100.00%> (+<0.01%)	⬆️
VM-windows-latest	99.37% <100.00%> (+<0.01%)	⬆️
pytest	99.31% <100.00%> (+<0.01%)	⬆️

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