Comment box upload focus border-radius (#2049)

* missing border-radius

* Create beige-horses-fetch.md

* lint

* you would think I would know these by now

Author: langermank

.changeset/beige-horses-fetch.md

@@ -0,0 +1,5 @@
+---
+"@primer/css": major
+---
+
+Comment box upload focus border-radius

src/forms/form-validation.scss

@@ -235,7 +235,11 @@ dl.form-group > dd, // TODO: Deprecate
   }
 
   &.focused {
-    @include focusBoxShadowInset(2px, var(--color-accent-fg));
+    border-color: var(--color-accent-fg);
+    border-radius: $border-radius;
+    outline: none;
+    // stylelint-disable-next-line primer/box-shadow
+    box-shadow: 0 0 0 2px var(--color-accent-fg);
 
     .form-control {
       border-color: transparent;