In the GNOME system tray menu, move the "Open" item to the top.
Currently, the "Open" menu item in the GNOME system tray menu is immediately above the "Quit". Move "Open" to the top of the menu, because (1) it is presumably the most frequently selected menu item, and (2) it prevents you from accidentally quitting the app when you mean to open it.
Chris Kellahan commented
YES. The number of times I have accidentally quit Teams....