ci web tests crash. maybe fix.

Author: stevensJourney

packages/web/vitest.config.ts

@@ -31,7 +31,7 @@ const config: UserConfigExport = {
     // Don't optimise these packages as they contain web workers and WASM files.
     // https://github.com/vitejs/vite/issues/11672#issuecomment-1415820673
     exclude: ['@journeyapps/wa-sqlite', '@powersync/web'],
-    include: ['bson', 'comlink']
+    include: ['bson', 'comlink', 'async-mutex']
   },
   plugins: [wasm(), topLevelAwait()],
   test: {