Disable autoscrolling of the log if the scroll bar isn't at the bottom

It's impossible to go back and read the history of the log because when something new is added, it scrolls all the way back to the bottom. It would be nice if autoscrolling was disabled if the scroll bar isn't at the bottom (similar to like twitch chat) so we can go back and read the history.

Start by locating the desktop log view and its scroll container, then reproduce the issue while new log entries are added. Check how the current view decides to scroll and verify that reading earlier entries is preserved when the scrollbar is not at the bottom, while new entries still follow the bottom when it is.

Written by the indexing model from the issue text.