fix(types): include @default annotations for props that are undefined by default (#1020)

* chore(deps-dev): upgrade sveld to v0.12.1

* Run "yarn build:lib"

* Re-run "yarn build:lib"

types/Button/Button.svelte.d.ts

@@ -46,11 +46,13 @@ export interface ButtonProps
 
   /**
    * Specify the icon to render
+   * @default undefined
    */
   icon?: typeof import("svelte").SvelteComponent;
 
   /**
    * Specify the ARIA label for the button icon
+   * @default undefined
    */
   iconDescription?: string;
 
@@ -88,6 +90,7 @@ export interface ButtonProps
 
   /**
    * Set the `href` to use an anchor link
+   * @default undefined
    */
   href?: string;
 

types/Button/ButtonSkeleton.svelte.d.ts

@@ -5,6 +5,7 @@ export interface ButtonSkeletonProps
   extends svelte.JSX.HTMLAttributes<HTMLElementTagNameMap["a"]> {
   /**
    * Set the `href` to use an anchor link
+   * @default undefined
    */
   href?: string;