Function install_channel_settings 

pub fn install_channel_settings()

Make the shell’s records this process’s settings from the start of its launch, when the launcher handed it the shell’s collaboration service. A setting the app reads or writes while it builds its window, before its collaboration manager connects, is then the shell’s: a write waits in the channel’s outbox and the primary route’s join sends it, in the order it was made. Installed only when the manager was built, an early write went to the sandbox’s own settings file and was lost.