update test to test for #17308.
requested to merge utkarsh.ayachit/paraview:17308-clipping-in-charts-when-saving-large-screenshots into master
Updating SaveLargeScreenshot to check for charts too, since we fixed clipping in charts when scaled a while ago (vtk/vtk!4835 (merged)).
Closes #17308 (closed)
Edited by Utkarsh Ayachit