Test how non-ASCII characters are encoded in relative URLs.

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1. PASS
2. FAIL: http://127.0.0.1:8000/uri/resolve-encoding-relative.html#%F4%F0%E0%E3%EC%E5%ED%F2
3. PASS
4. PASS
5. FAIL: http://127.0.0.1:8000/%D0%BF%D1%83%D1%82%D1%8C?%E7%E0%EF%F0%EE%F1#%F4%F0%E0%E3%EC%E5%ED%F2

