Change DPI to 96

[Ruben2776]

Fixes #1780

[CLAassistant]

All committers have signed the CLA.

[dlemstra]

Thanks for creating this PR but I am not sure if this would be the best solution. Maybe we could add an extra ToWriteableBitmapWithDensity method that uses the image.Density and change ToWriteableBitmap to use a density of 96? I can also make these changes myself if you don't want to do this. This should probably also include some tests to check if the dpi on the WriteableBitmap has the correct value. If that is even available in the api.

[Ruben2776]

Yeah, okay, that sounds good.

[dlemstra]

Will you be going to make these changes or do you want me to do this?

[Ruben2776]

I don't know anything about how that dpi test would work. I think it would be better if you did it.

[dlemstra]

In the unit test you would need to check if the Dpi property of the WriteableBitmap that was created has the correct value.

[dlemstra]

I would create a private method that has the current implementation and specify either new Vector(96, 96) or new Vector(self.Density.X, self.Density.Y) as an argument to that method.

[Ruben2776]

I updated it with ToWriteableBitmapInternal and sending argument between the two.

[dlemstra]

Thanks for helping me. I will add the unit tests myself 😁