fix websql full text index key serialization.
fix websql full text index key serialization.

kakadiya91/ydn-db,kakadiya91/ydn-db,kakadiya91/ydn-db,yathit/ydn-db,yathit/ydn-db,yathit/ydn-db,yathit/ydn-db,kakadiya91/ydn-db,yathit/ydn-db,kakadiya91/ydn-db