fix: types for $inpect.trace

Author: paoloricciuti

packages/svelte/src/ambient.d.ts

@@ -433,7 +433,7 @@ declare namespace $inspect {
 	 *   });
 	 * </script>
 	 */
-	export function trace(name: string): void;
+	export function trace(name?: string): void;
 
 	// prevent intellisense from being unhelpful
 	/** @deprecated */

packages/svelte/types/index.d.ts

@@ -3091,7 +3091,7 @@ declare namespace $inspect {
 	 *   });
 	 * </script>
 	 */
-	export function trace(name: string): void;
+	export function trace(name?: string): void;
 
 	// prevent intellisense from being unhelpful
 	/** @deprecated */