[RCS UCE] Fix the error of the pidf data conversion

Fix the capability and pidf conversion error:
1. The PIDF data doesn't include the service-description
2. The unsupportedDuplexMode is empty
3. The timestamp is empty

Bug: 177495626
Test: atest PidfParserTest
Change-Id: I48b4a66722026b5249887230a910f05e60f7f522
3 files changed