Skip adding providers if the camera has native WebRTC (#129808)

* Skip adding providers if the camera has native WebRTC

* Update homeassistant/components/camera/__init__.py

Co-authored-by: Martin Hjelmare <marhje52@gmail.com>

* Implement suggestion

* Add tests

* Shorten test name

* Fix test

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Co-authored-by: Martin Hjelmare <marhje52@gmail.com>