[pgAdmin][patch] RM5555 Wrong displayed row order

I was able to partially reproduce the issue, find the image below for your reference.

If a user tries clicking the button simultaneously, this issue is rarely occurring. I don't think so any user will try to click with such a speed to get the records.

The issue reproduced consists of only partial data displayed in the Data Output, but was not able to reproduce the wrong sorting order of records.

I have added delays on the execute button so users won't be able to click the button simultaneously.