telaf: Fix log component memory access issue

Copy the full component name string in log session data structure
instead of only saving the string pointer. This resolves the crash
issue if the DLT log level of deviceManager is changed after loading
the VHAL libraries.

Change-Id: I6dc913c4dd1cdbb3b9ecc82302f4083c30c9eebe
Signed-off-by: Andrew Zhao <quic_zhax@quicinc.com>