fix: ignore missing @opentelemetry/api (#14774)

.changeset/fuzzy-lies-begin.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+fix: ignore TypeScript errors when `@opentelemetry/api` is not installed

packages/kit/src/exports/public.d.ts

@@ -25,6 +25,7 @@ import {
 	LayoutParams as AppLayoutParams,
 	ResolvedPathname
 } from '$app/types';
+// @ts-ignore - some users might not have this installed.
 import { Span } from '@opentelemetry/api';
 
 export { PrerenderOption } from '../types/private.js';