viewdock state (columns?) not saved in session

[Elaine Meng]

Session did not save which columns were shown (checkboxes seem correct but actual table contents were not those columns, see attached screenshot). For example, "hbonds" is checked but not shown, ditto for some of the descriptors that were in the docking file. I used the same data as in the ticket to add swissdock support to ViewDockX #4232. Besides the screenshot I also attached the session from the current daily build.

[Elaine Meng]

Before saving session I had also tried column reordering by dragging, don't know if that is related to this problem.

[pett]

Fix: ​https://github.com/RBVI/ChimeraX/commit/ac5cd176b93bbff3fa93df764346b9cd78dbde68