Declare android.intent.action.ALL_APPS explictly

This helps to open all apps via adb command in standard way
when gesture action isn't convenient. (e.g. Cloud Android)

Note that the intent is defined in Intent.java and public,
and Launcher activity has handled the intent.

Test: Manually on Cloud Android
Flag: EXEMPT nitfix
Bug: 398109316
Change-Id: I61a33d9074d0bead42bdab3679777fbf892cf3bd