Summary:
When editing data in a table linked to its summary, if the edit results in an
update to the summary table, the cursor was jumping to the first row in the
linked table.
This is visible, for example, in the template
https://templates.getgrist.com/2i9WoHs2oRzK/Credit-Card-Activity-Template-AmEx/p/2
if editing "Amount" in the "ACTIVITY" widget (because that causes an update in
"ACTIVITY [by Category]").
The fix removes the offending line which seems unneeded: group-by columns in
summary tables don't change for an existing row, so there is no need to watch
the summary table for changes.
Test Plan: Adds a test case that fails without the fix, and passes with it.
Reviewers: jarek
Reviewed By: jarek
Subscribers: cyprien
Differential Revision: https://phab.getgrist.com/D3674
82eb5b3f76