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/ComposedModal/ComposedModal.svelte.d.ts

@@ -5,6 +5,7 @@ export interface ComposedModalProps
   extends svelte.JSX.HTMLAttributes<HTMLElementTagNameMap["div"]> {
   /**
    * Set the size of the composed modal
+   * @default undefined
    */
   size?: "xs" | "sm" | "lg";
 

types/ComposedModal/ModalFooter.svelte.d.ts

@@ -17,6 +17,7 @@ export interface ModalFooterProps
 
   /**
    * Specify a class for the primary button
+   * @default undefined
    */
   primaryClass?: string;
 
@@ -35,6 +36,7 @@ export interface ModalFooterProps
 
   /**
    * Specify a class for the secondary button
+   * @default undefined
    */
   secondaryClass?: string;