chore(folio-webApp): pin dev-server port and trim worker logging

webpack-dev-server now binds 8088 (or WEBAPP_PORT) so it doesn't
collide with the docs server on 8080. Drop the per-message reply
log; keep only the OPFS init line and error logging.

examples/folio/app/webApp/src/wasmJsMain/resources/sqlite.worker.js

@@ -64,8 +64,7 @@ self.onmessage = (event) => {
     })
     .catch((err) => {
       const message = err && err.message ? String(err.message) : String(err);
+      console.error('[sqlite worker] error', message, err);
       self.postMessage({ id: data && data.id, error: { message, name: err && err.name } });
     });
 };
-
-self.postMessage({ ready: true, persistent: isPersistent });

examples/folio/app/webApp/webpack.config.d/coopcoep.js

@@ -1,5 +1,6 @@
 config.devServer = {
   ...(config.devServer || {}),
+  port: process.env.WEBAPP_PORT ? Number(process.env.WEBAPP_PORT) : 8088,
   headers: {
     ...((config.devServer && config.devServer.headers) || {}),
     'Cross-Origin-Opener-Policy': 'same-origin',