This PR fixes a test error with ada_log caused by calling a nonexistent to_string method on url_pattern. According to the WHATWG specification, url_pattern does not provide a to_string method. Instead of implementing a to_string method, I changed the logging output.

Steps to reproduce:

cmake -B build -DADA_TESTING=ON
cmake --build build 
ADA_LOGGING=1 ctest --output-on-failure --test-dir build

Outputs:

parse_result:
  protocol: 'https'
  username: 'user'
  password: 'pass'
  hostname: 'example.com'
  port: '8080'
  pathname: '/path'
  search: '?query'
  hash: '#fragment'

Refs:

• https://github.com/ada-url/ada/blob/main/include/ada/url_pattern_init.h