Modify invoke logic for error callback

Modify invoke logic for error callback

Error callback is called when selected provider is not available
for some reason. (eg. Uninstalled, disabled, event not supported, privilege)
Error callback will called when watch application sends update request with
watchface_complication_send_update_request or periodic update or received
uninstall/diable events from pkgmgr

Change-Id: If52a8b5433a0a01ca78279c6d74076bff7de3a95
Signed-off-by: hyunho <hhstark.kang@samsung.com>