Charles Proxy does not proxy any domain unless specified in the Proxy Settings. It’s on the Charles Proxy Documentation:
You must specifically identify the host names you want to enable SSL Proxying on. The list is in the Proxy Settings, SSL tab. You can also right-click on a host name in the structure view and turn on or off SSL Proxying.
If you want all HTTPS traffic to be captured by Charles, then you can add *:* on that list:
