fix: return back box-sizing: border-box on <hr> (#5265)

Accidentally removed it while refactoring preset styles.

Author: TrySound

packages/sdk/src/__generated__/normalize.css.ts

@@ -99,12 +99,15 @@ body {
 /**
  * 1. Add the correct height in Firefox.
  * 2. Correct the inheritance of border color in Firefox. (https://bugzilla.mozilla.org/show_bug.cgi?id=190655)
+ * 3. width: 100% inside flexbox will overflow <hr> out of it
  */
 hr {
   /* 1 */
   height: 0;
   /* 2 */
   color: inherit;
+  /* 3 */
+  box-sizing: border-box;
 }
 
 /**