Fix incorrect size of markers with data defined name
remove warnings
[processing] fix rows addition in batch processing interface
[processing] fix wrong behavior in Join by location alg (fix #11736)
Render incremental rendering image at proper location

The old behavior was to render it at the currently visibleExtent based on the
map canvas. The job may however have been scheduled for a different extent and
therefore rendered at an improper location.
Remove unneeded private method and code cleanup
[processing] fix exception raising (fix #11842)