The scriptCategory defines the overall geometry of a TextTheme for
MaterialTextGeometry.localizedFor method in terms of the
three language categories defined in https://material.io/go/design-typography.
Generally speaking, font sizes for ScriptCategory.tall and ScriptCategory.dense scripts - for text styles that are smaller than the title style - are one unit larger than they are for ScriptCategory.englishLike scripts.
@override ScriptCategory get scriptCategory => ScriptCategory.tall;