refs #23161 [finc] revert changes from 22939

* link-text-decoration default is underline

themes/finc/scss/_customVariables.scss

@@ -174,7 +174,7 @@ $margin-right-width: inherit !default;
 // *****************************************************************
 $link-color: $brand-primary !default;
 $link-hover-color: darken($link-color, 15%) !default;
-$link-text-decoration: none !default;
+$link-text-decoration: underline !default;
 $link-hover-decoration: $link-text-decoration !default;
 $link-on-dark-bg-color: invert($link-color) !default;