Fix issue where cursor becomes 'detached' when resizing a widget back and forth [CMP-3]
Fix issue where cursor becomes 'detached' when resizing a widget back and forth [CMP-3]

Issue caused by arbitrary threshold when reducing the size of a widget, replaced this with the column width value and it works more accurately.

There is still a small degree of cursor detachment caused by the browser's inability to track fast movement on a pixel-by-pixel basis, it's unreasonable for us to even attempt to fix this as it'd probably cause performance issues.

The issue where it is no longer possible to increase a widget to the full width of the grid is now so hard to replicate, it's to be considered an edge case (before, it was easy to cause, and needed fixing).

jadu/pulsar,jadu/pulsar,jadu/pulsar