Show status bar icon during VDM screen mirroring

This change also triggers connected display animation
every time a virtual device owned mirror display is added.

Flag: ACONFIG android.companion.virtual.flags.interactive_screen_mirror DEVELOPMENT
Test: atest SystemUITests
Bug: 292212199
Change-Id: I9bfd7f5e2923f18b963d0e71ed5ad03c687f0d42