Add BROADCAST_CLOSE_SYSTEM_DIALOGS to recents package

It uses AM.closeSystemDialogs() and should have the permission. I had
created the protection level in ag/13090697 but forgot to actually
request the permission.

Bug: 177228919
Bug: 159105552
Test: atest CloseSystemDialogsTest
Test: atest android.server.wm.WindowMetricsActivityTests#testMetricsMatchesLayoutOnActivityOnCreate
Change-Id: I661dac17f2160ed36adb1a193e739c200169a37d