[whatwg/url] Removing trailing C0 control or space at basic URL parser makes difference with override (#542)

## Steps to reproduce
The below `console.log` should show the same result.

```js
const hash = 'test\x00';
const url = new URL(`http://a.com/#${hash}`)

console.log(url.href)
// => http://a.com/#test

url.hash = hash
console.log(url.href)
// => http://a.com/#test%00
```

## Summary
Because the basic URL parser removes trailing c0 control or space only when `url` is not given, it makes a difference with override.

Refs: https://url.spec.whatwg.org/#url-parsing
```
1. If url is not given:
  1.Set url to a new URL.
  2. If input contains any leading or trailing C0 control or space, validation error.
  3. Remove any leading and **trailing C0 control or space** from input.
```

Potential solutions would be below two:
1. Allows basic URL parser to use c0 control or space
2. Remove c0 control or space always

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