Log the error of TCS, TCMS and SysTC.

TextClassifierService passes the error message to onFailure() when it fails
to process the task. But the error message was dropped at TextClassifierService
right away which makes debugging hard. Log the error at the place where the
error happens to help debugging.

Bug: 139114128
Test: Manual. Use DefaultTCService to pass error message and make sure
the error log is printed.

Change-Id: I7c848a6e96db85d6e5b4f90ee9677dfe5b703149