Add BIND_INCLUDE_CAPABILITIES flags to SystemCaptionsManagerService

When system process binds to SystemCaptionsManagerService, add BIND_INCLUDE_CAPABILITIES

Bug: 153144383
Test: adb shell dumpsys activity -a, observe com.google.android.as
process has capability 7.

Change-Id: I3284ac60a3032c68b378570ceb20129916445596