homebridge-ring shows an In-Home Doorbell Switch for a Ring Elite, but not for a Ring Pro
# Bug Report

### Describe the Bug

I have two Ring Doorbells installed at my home.  A Ring Pro and a Ring Elite.  Both are hard-wired, and working fine.   I set up Homebridge on a Raspberry Pi with the hopes of setting up different HomeKit automations when each doorbell is pressed.  However, only the Ring Elite is presenting the "In-Home Doorbell Switch."  The Ring Pro is not.  Is this expected behavior?  If not, how can I get the Ring Pro's In-Home Doorbell Switch to appear as well?  All other aspects of this plug-in are working great for me.  I just can't get the Ring Pro to show an In-Home Doorbell Switch like I can for the Ring Elite.  Thanks for any guidance!

### To Reproduce
Install and configure homebridge-ring with appropriate refresh token.

### Expected behavior
I expected to see both the Ring Pro and Ring Elite show up as an In-Home Doorbell Switch.  I am only seeing the Ring Elite.

### Screenshots/Logs

http://i.imgur.com/I7lY3ls.png

http://i.imgur.com/b41YfDr.png


### Additional context
N/A

### Homebridge Ring Config

       "refreshToken": "xxxxxxxxxxx",
            "hideDoorbellSwitch": false,
            "hideInHomeDoorbellSwitch": false,
            "sendCameraMotionNotificationsToTv": false,
            "platform": "Ring"
        },

### Environment

 - OS: Raspbian GNU/Linux Buster (10)
 - Node.js: v14.15.0
 - NPM: v6.14.8
 - homebridge-ring:  v4.4.15
 - homebridge: 1.1.6
