Sync dropdown font size with btn font size

scss/_dropdown.scss

@@ -24,7 +24,7 @@
   min-width: $dropdown-min-width;
   padding: $dropdown-padding-y 0;
   margin: $dropdown-spacer 0 0; // override default ul
-  font-size: $font-size-base; // Redeclare because nesting can cause inheritance issues
+  font-size: $dropdown-font-size;
   color: $body-color;
   text-align: left; // Ensures proper alignment if parent has it changed (e.g., modal footer)
   list-style: none;

scss/_variables.scss

@@ -755,6 +755,7 @@ $navbar-dark-brand-hover-color:           $navbar-dark-active-color !default;
 $dropdown-min-width:                10rem !default;
 $dropdown-padding-y:                .5rem !default;
 $dropdown-spacer:                   .125rem !default;
+$dropdown-font-size:                $btn-font-size !default;
 $dropdown-bg:                       $white !default;
 $dropdown-border-color:             rgba($black, .15) !default;
 $dropdown-border-radius:            $border-radius !default;