SkMaskFilter::MakeBlur() expects a "blur_sigma", but Shadow class passes it a "blur_radius" #81145
Description
In the Shadow class, "blur_radius" are converted to "sigma" when creating a Paint object:
// (flutter/lib/ui/painting.dart)
double get blurSigma => convertRadiusToSigma(blurRadius);
The "sigma" value will be passed to skia:
// (flutter/lib/ui/painting/paint.cc)
paint_.setMaskFilter(SkMaskFilter::MakeBlur(blur_style, sigma));
But, in Shadow::_encodeShadows() still use "radius" which leads to the native paragraph_txt.cc mistakenly use "radius"(it should pass a "sigma" to skia).
// (flutter/lib/ui/painting.dart)
shadowsData.setFloat32(_kBlurOffset + shadowOffset,
shadow.blurRadius, _kFakeHostEndian);
// (paragraph_txt.cc)
paint.setMaskFilter(SkMaskFilter::MakeBlur(
kNormal_SkBlurStyle, text_shadow.blur_radius, false));