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/CodeSnippet/CodeSnippet.svelte.d.ts

@@ -12,6 +12,7 @@ export interface CodeSnippetProps {
    * Set the code snippet text
    * Alternatively, use the default slot (e.g., <CodeSnippet>{`code`}</CodeSnippet>)
    * You must use the `code` prop to copy the code
+   * @default undefined
    */
   code?: string;
 
@@ -61,11 +62,13 @@ export interface CodeSnippetProps {
 
   /**
    * Specify the ARIA label for the copy button icon
+   * @default undefined
    */
   copyButtonDescription?: string;
 
   /**
    * Specify the ARIA label of the copy button
+   * @default undefined
    */
   copyLabel?: string;