I don't know what is worse, the fact that the electrician did this in the first place without drilling the sole plate or the fact that the tacker tacked the plasterboard right over it without saying anything to anyone!
Then every following trade, carpenter fitting skirting, carpet fitter, painter all also said and did nothing and ignored it.
Even worse the home was not snagged, or snagged properly, by the Site Management and the bulge in the wall investigated and rectified before you saw it or moved in.
It is even worse than you thought!
There should be a vapour barrier behind the plasterboard to stop moisture condensing in the insulation at the "dew point"
Unless of course it was cut out (for access) before you took the photo!