Send directed broadcast to package installers that have active sessions.

For each installer, we send a broadcast that includes package names of items that:
* Are being installed by that installer
* Are on the first screen
* Have an active install session

The packages are seperated by:
* Folder items
* Workspace items
* Hotseat items
* Widgets

Bug: 74355094
Change-Id: I573ed6b3b84314ef244486fcf8354bebdff8bbdf