[9.x] add Http::connectTimeout to set connect_timeout option

[chu121su12]

Closes #40465

This PR #40187 introduces breaking change to Http call:

Http::withOptions([
  'timeout' => 1,
  'connect_timeout' => 1,
])->get('http://laravel.com')

There's standalone timeout method to set timeout, but currently there's no way to set connect_timeout outside of withOptions. This is due to withOptions is doing array_merge_recursive causing existing options to be arrayed and when the options get to guzzle, it cannot handle array * int.