There will only be police verification required for the passport reissue. No need for a new PCC since its not requested specifically by IRCC. For our case, my wife did not change her name, it was just my name added to her passport.
I would suggest not to change your surname in these times as it can delay the processing significantly (I understand as per indian traditions it has to be changed at some point of time, but if it can wait until you get PR, I would suggest waiting for it). For spouse name addition, like in my case, it is a fairly simple and quick process with Indian authorities, they only need to see marriage certificate for it.