Bluetooth: Prevent NPE during automation

Use case:
1) start OppLauncher activity or PbapActivity
   using adb shell command

Failure:
"Unfortunately, Bluetooth share has stopped" error comes.

Root cause:
Observed NPE because of no action was supplied
during opening activity.

Fix:
Add NULL check before process action value
to prevent force close  in profile.

CRs-Fixed: 2349852
Change-Id: Ic9cc8079fd2c1c8b82c5b5062f253828483ed7e9
2 files changed