fix: exclude service worker directory from tsconfig (#12196)

The [docs](https://kit.svelte.dev/docs/service-workers) state that the
service worker can be located at `src/service-worker.js` or as an
`index.js` file within the `src/service-worker` directory.

Without this fix users who place the file within the directory run into
Typescript errors like
[#11721](https://github.com/sveltejs/kit/issues/117210)

Follow up to [#11727](#11727)

.changeset/red-ladybugs-press.md

@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+fix: exclude service worker directory from tsconfig

packages/kit/src/core/sync/write_tsconfig.js

@@ -87,8 +87,11 @@ export function get_tsconfig(kit) {
 		exclude.push(config_relative(kit.files.serviceWorker));
 	} else {
 		exclude.push(config_relative(`${kit.files.serviceWorker}.js`));
+		exclude.push(config_relative(`${kit.files.serviceWorker}/**/*.js`));
 		exclude.push(config_relative(`${kit.files.serviceWorker}.ts`));
+		exclude.push(config_relative(`${kit.files.serviceWorker}/**/*.ts`));
 		exclude.push(config_relative(`${kit.files.serviceWorker}.d.ts`));
+		exclude.push(config_relative(`${kit.files.serviceWorker}/**/*.d.ts`));
 	}
 
 	const config = {