Remove unnecessary exports of file-local helpers

Remove the `export` keyword from functions that are only used within
their own file and are not part of any package's public API:

- `parseStringsParam` and `isOrder` in notifications-backend
- `toWeb` in backend-defaults urlReader
- `resolvePublicPath` in app-backend

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
Made-with: Cursor

plugins/app-backend/src/lib/config/injectConfigIntoHtml.ts

@@ -70,7 +70,7 @@ ${JSON.stringify(appConfigs, null, 2)
   return Buffer.from(indexHtmlContentWithConfig, 'utf8');
 }
 
-export function resolvePublicPath(config: Config) {
+function resolvePublicPath(config: Config) {
   const baseUrl = new URL(
     config.getOptionalString('app.baseUrl') ?? '/',
     'http://localhost:7007',