styles(tooltip): use subtitle-2 type style for indigo

Author: didimmova

src/components/tooltip/themes/shared/tooltip.indigo.scss

@@ -1,5 +1,5 @@
 @use 'styles/utilities' as *;
 
 [part="base"] {
-    font-size: rem(12px);
+    @include type-style('subtitle-2');
 }