### What?
List column state could become out of sync if toggling columns happened
in rapid succession as seen in CI. Or when using a spotty connection
where responses could come back out of order.
### Why?
State was not being preserved between toggles. Leading to incorrect
columns being toggled on/off.
### How?
Updates internal column state before making the request to the server so
when a future toggle occurs it has up to date state of all columns. Also
introduces an abort controller to prevent the out of order response
issue.
129fadfd2c