Additional small cleanups to as a followup to removing self._val

[bdraco]

followup to #1397

• avoid elif blocks
• made the __new__ code a bit more concise
• avoid some unneeded intermediate variables
• make URL object creation always happen in the same order

[codspeed-hq]

CodSpeed Performance Report

Merging #1402 will not alter performance

_{Comparing new_pref_check (da3cc58) with master (71d171e)}

Summary

✅ 82 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.05%. Comparing base (71d171e) to head (da3cc58).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1402      +/-   ##
==========================================
- Coverage   99.61%   96.05%   -3.57%     
==========================================
  Files          23       31       +8     
  Lines        4716     5747    +1031     
  Branches      311      343      +32     
==========================================
+ Hits         4698     5520     +822     
- Misses         18      201     +183     
- Partials        0       26      +26     

Flag	Coverage Δ
CI-GHA	96.05% <100.00%> (-3.51%)	⬇️
MyPy	48.79% <90.00%> (?)
OS-Linux	99.55% <100.00%> (-0.01%)	⬇️
OS-Windows	99.61% <100.00%> (-0.01%)	⬇️
OS-macOS	99.29% <100.00%> (-0.01%)	⬇️
Py-3.10.11	99.27% <100.00%> (-0.01%)	⬇️
Py-3.10.15	99.51% <100.00%> (-0.01%)	⬇️
Py-3.11.10	99.51% <100.00%> (-0.01%)	⬇️
Py-3.11.9	99.27% <100.00%> (-0.01%)	⬇️
Py-3.12.7	99.51% <100.00%> (+0.23%)	⬆️
Py-3.13.0	99.51% <100.00%> (-0.01%)	⬇️
Py-3.9.13	99.23% <100.00%> (-0.32%)	⬇️
Py-3.9.20	99.46% <100.00%> (-0.01%)	⬇️
Py-pypy7.3.16	99.52% <100.00%> (-0.01%)	⬇️
Py-pypy7.3.17	99.55% <100.00%> (-0.01%)	⬇️
VM-macos-latest	99.29% <100.00%> (-0.01%)	⬇️
VM-ubuntu-latest	99.55% <100.00%> (-0.01%)	⬇️
VM-windows-latest	99.61% <100.00%> (-0.01%)	⬇️
pytest	99.55% <100.00%> (-0.01%)	⬇️

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