Allow removal of sensor settings in scrape (#90412)
* Allow removal of sensor settings in scrape
* Adjust
* Adjust
* Add comment
* Simplify
* Simplify
* Adjust
* Don't allow empty string
* Only allow None
* Use default as None
* Use sentinel "none"
* Not needed
* Adjust unit of measurement
* Add translation keys for "none"
* Use translations
* Sort
* Add enum and timestamp
* Use translation references
* Remove default and set suggested_values
* Disallow enum device class
* Adjust tests
* Adjust _strip_sentinel
4f54e33f67