Unexpected pathname match on trailing slash in actual URL

[kettanaito]

Steps to reproduce

"urlpattern-polyfill": "^10.0.0"

import { URLPattern } from 'urlpattern-polyfill'

let p = new URLPattern('https://example.com')
p.exec('https://example.com/')

Expected result

I expect the pattern to:

1. Match.
2. Have no entries in the groups through the entire match result.

Actual result

The pattern does match, but it incorrectly reports the trailing slash "/" as a group match for the pathname segment:

{
  inputs: [ 'https://example.com/' ],
  protocol: { input: 'https', groups: {} },
  username: { input: '', groups: { '0': '' } },
  password: { input: '', groups: { '0': '' } },
  hostname: { input: 'example.com', groups: {} },
  port: { input: '', groups: {} },
+ pathname: { input: '/', groups: { '0': '/' } },
  search: { input: '', groups: { '0': '' } },
  hash: { input: '', groups: { '0': '' } }
}

Since I haven't declared any matching groups there (i.e. wildcards or parameters), I don't expect to get any match results.

Additional info

This is reproducible on v10, not reproducible on v9.