Cheese does not list all webcams

[srnissen]

## Summary:

Cheese finds different webcams when run as "cheese" and "sudo cheese"

## Expected:

When running cheese without sudo, preferences->webcam lists all my cameras, once each.

## Actual:

When running cheese without sudo, only the external camera is found, and it is listed twice.

When running cheese with sudo, all cameras are found - and also listed twice.

## Details:

Running normally, under preferences->webcam, cheese lists:

- CameraA (V4L2)
- CameraA (V4L2)

(Yes it lists the same camera twice.)

Running cheese with sudo, the same dropdown contains:

- Integrated Camera: Integrated C
- Integrated Camera: Integrated I
- CameraA
- Integrated Camera: Integrated C
- Integrated Camera: Integrated I
- CameraA

Again, it lists every camera twice (And for some reason strips "(V4L2)" from the name of the external camera)

## Machine information

lsb_release -rd: Pop!_OS 22.04 LTS

Cheese version: 41.1-1build1 500

Running lshw with/wihtout sudo also results in two different lists - without sudo, only CameraA is found. With sudo, the integrated camera appears.

(Unfortunately, ubuntu-bug is weird on pop!_os or I'd report through there)