fix(evm-wallet): update wallet_send test to handle formatted tx result

The wallet_send tool now returns formatted output (UserOp hash, explorer
link) instead of a raw hex hash. Update assertion accordingly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: sirtimid

packages/evm-wallet-experiment/test/integration/openclaw-plugin.integration.test.ts

@@ -315,9 +315,10 @@ exec "${process.execPath}" "${ocapCliEntrypoint}" "$@"
         value: '0x1',
       });
 
-      expect(result.content[0]?.text).toMatch(/^0x[\da-f]{64}$/iu);
+      const text = result.content[0]?.text ?? '';
+      expect(text).not.toContain('Error');
+      expect(text).toMatch(/0x[\da-f]{64}/iu);
       expect(observedRawTx).toMatch(/^0x[\da-f]+$/iu);
       expect(observedRawTx?.length).toBeGreaterThan(10);
-      expect(result.content[0]?.text).not.toContain('toLowerCase');
     });
   });