[regression] After renaming a project the name taken for the rendering is the starting one.

I opened an old project, made some changes, after that i saved again the project with a new name. but after that when i started the rendering the name taken for the output is the starting one and not the updated one

on this image is visible that in the window title there is the UPDATED name... but on rendering there is the OLD NAME.

i suggest to take as rendering name the same name of the title window.

i marked the "regression" because this was fixed some timee ago' : https://invent.kde.org/kde/kdenlive/-/issues/512