fix(FontList): address the bug with selected font transition animations

src/entities/Font/model/const/const.ts

@@ -86,3 +86,9 @@ export const DEFAULT_TYPOGRAPHY_CONTROLS_DATA: ControlModel<ControlId>[] = [
 export const MULTIPLIER_S = 0.5;
 export const MULTIPLIER_M = 0.75;
 export const MULTIPLIER_L = 1;
+
+/**
+ * Index value for items not yet loaded in a virtualized list.
+ * Treated as being at the very bottom of the infinite scroll.
+ */
+export const VIRTUAL_INDEX_NOT_LOADED = Infinity;