Always mask text in tiny_skia renderer

[Koranir]

Fixes #2173
Not sure exactly why physical_bounds says it isn't in the clip_bounds, but looking into the tiny_skia code it seems that there isn't any performance hit if we add a mask or not.

[hecrj]

looking into the tiny_skia code it seems that there isn't any performance hit if we add a mask or not

How so? It seems to me that the presence of a mask does add a new blitting stage:

https://github.com/RazrFalcon/tiny-skia/blob/ce3fe9bab0659fb928d6c22c03b74e009a8a2b77/src/pipeline/blitter.rs#L86-L88