[webapi][XWALK-2343] Add default value for NDEFRecord.id

- Failure analysis: getPayload access to onError method, it should be the nfc device issue.

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: pass 0, fail 1, block 0
@zqzhang The default value of record.id is null, and null is an object. It is initialized to "1" on line 57, then it can be expected to string.