Use can_ada for supported URLs

[AdrianAtZyte]

#221 (comment)

Fixes #98, fixes #204, closes #221, fixes #222, closes #270.

Some of the tests in #259 would still not pass with these changes, but I suspect that may be OK (can_ada / WHATWG diverge from stdlib).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.39%. Comparing base (d5877fe) to head (38f52bf).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #261      +/-   ##
==========================================
- Coverage   98.70%   98.39%   -0.31%     
==========================================
  Files           9        9              
  Lines         848      872      +24     
  Branches      172      175       +3     
==========================================
+ Hits          837      858      +21     
- Misses          4        9       +5     
+ Partials        7        5       -2     

Files with missing lines	Coverage Δ
w3lib/_url.py	98.98% <100.00%> (+0.60%)	⬆️

... and 1 file with indirect coverage changes

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[codspeed-hq]

Merging this PR will improve performance by 22.42%

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 6 improved benchmarks
✅ 39 untouched benchmarks

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	test_benchmark_url_cold[parse_url]	145.9 µs	111.5 µs	+30.85%
⚡	test_benchmark_url_cold[add_or_replace_parameter]	746.9 µs	574 µs	+30.12%
⚡	test_benchmark_url_cold[safe_url_string]	1.9 ms	1.5 ms	+24.94%
⚡	test_benchmark_url_cold[safe_download_url]	392.5 µs	318.2 µs	+23.36%
⚡	test_benchmark_url_cold[add_or_replace_parameters]	328.4 µs	287.8 µs	+14.08%
⚡	test_benchmark_url_cold[canonicalize_url]	350.2 µs	311.4 µs	+12.45%

Tip

Curious why this is faster? Comment @codspeedbot explain why this is faster on this PR, or directly use the CodSpeed MCP with your agent.

---

_{Comparing AdrianAtZyte:ada (38f52bf) with master (d5877fe)}

[wRAR]

There are several changes that look like it was latin1 and now is utf-8, and in at least some of them an arg with "latin1" is passed to the function, I wonder if all of these are still valid behavior.

[AdrianAtZyte]

My understanding is that latin1 is used for decoding bytes to str, then utf-8 for percent-encoding, which I think aligns with WHATWG.

[wRAR]

Some of the tests in #259 would still not pass with these changes, but I suspect that may be OK (can_ada / WHATWG diverge from stdlib).

Yes, it says that explicitly so maybe we don't want to have those tests...