fix: --f-font-weight-bold variable value (fixes SFKUI-7399)

Author: udenius

packages/theme-default/src/shared/_index.scss

@@ -47,7 +47,7 @@
     /// Font weight
     --f-font-weight-normal: 400;
     --f-font-weight-medium: 700;
-    --f-font-weight-bold: 900;
+    --f-font-weight-bold: 700;
 
     /// Font line height
     --f-line-height-small: 1.25;