Display last correct query results

[ericpgreen2]

Job to be Done — Users that are writing a model receive keystroke-by-keystroke feedback in the workspace can’t see the last valid result set to help them troubleshoot the current error

Solution: Keep last result set output table from before the current error and add a grey overlay. Move the error to the bottom of the workspace. Not in scope: Have a path to revert to last known correct query

Something like this: