Merge "Remove flag limit_manage_media_projection" into main

# Project link: https://gantry.corp.google.com/projects/android_platform_window_surfaces/changes

flag {

    name: "limit_manage_media_projection"

    namespace: "lse_desktop_experience"

    description: "Limit signature permission manage_media_projection to the SystemUI role"

    bug: "323008518"

    is_fixed_read_only: true

}

flag {

    name: "media_projection_connected_display"

    namespace: "virtual_devices"