fix(e2e): always init bb sync in wallet worker (#23855)

Author: spypsy

yarn-project/end-to-end/src/test-wallet/wallet_worker_script.ts

@@ -1,6 +1,6 @@
 import { createAztecNodeClient } from '@aztec/aztec.js/node';
 import type { SendOptions } from '@aztec/aztec.js/wallet';
-import { BarretenbergSync } from '@aztec/bb.js';
+import { BackendType, BarretenbergSync } from '@aztec/bb.js';
 import { jsonStringify } from '@aztec/foundation/json-rpc';
 import { createLogger } from '@aztec/foundation/log';
 import type { ApiSchema, Fr } from '@aztec/foundation/schemas';
@@ -20,9 +20,8 @@ try {
 
   logger.info('Initializing worker wallet', { nodeUrl });
   const node = createAztecNodeClient(nodeUrl);
-  if (pxeConfig?.proverEnabled) {
-    await BarretenbergSync.initSingleton();
-  }
+  // Worker sync bb use is limited to crypto and proof serialization helpers.
+  await BarretenbergSync.initSingleton({ backend: BackendType.Wasm });
   const wallet = await TestWallet.create(node, pxeConfig);
   logger.info('Worker wallet initialized');