Fix Fail to Launch work tab in launcher

On entering CTS Verifier apk, when test item Launch work tab in Launcher is clicked under BYOD Managed Provisioning, test fails and gives ActivityNotFoundException.

Root cause is because android.intent.action.SHOW_WORK_APPS is not declared for activity com.android.launcher3.uioverrides.QuickstepLauncher

Fix:
After declaring android.intent.action.SHOW_WORK_APPS for activity com.android.launcher3.uioverrides.QuickstepLauncher, the test passes.

Bug:
Test:
1. Download GMS Load
2. Boot Up Device And skip google setup screen
3. Enter Verifier apk,
4. Enter test item
5. BYOD Managed Provisioning, click Launch work tab

Change-Id: I694503acb77454351d572eaa67bcbb66ccc0ae0e