Yes and no. There is no single function to collapse all ProChannels in the console, however, the functions to widen and narrow all strips have a side-effect of collapsing all ProChannels. These functions may be bound using
Preferences > Customization > Keyboard Shortcuts. It is not necessary to toggle between narrow and wide the ProChannel will collapse when calling widen all strips even when the strips are wide and the same for the narrow function. Alternately, CTRL+A then CTRL+click on the arrow to an open ProChannel will close all open ProChannels in either the tracks or buses, depending on which is selected.