Rome has actually relied upon these quite heavily. The authenticity being unknown to St Thomas Aquinas, he relied upon these for his refutation of the Greeks in regards to the papacy, specifically St Cyril. This was the basis for the Catechism of Trent, with I believe, 11 citations that have since proved to be forgeries.
These forgeries also played a significant part in Gregory VII's Dictatus Papae.
Nonsense. You have individuals in history who were taken in by the forgeries, but Rome itself never used them to prove it's claims, and never relied on them. There is sufficient proof in scripture, the writings of the fathers, and elsewhere.
The Dictatus Papae is attributed to Gregory VII, but it itself is a forgery in that no one can agree on who wrote it. Most scholars agree that St. Gregory VII was not the author.
Please list the citations in the Roman Catechism that you refer to.
I have read St. Thomas' work against the Greeks, and do not recall him relying on the forged works. If I am mistaken, please quote them.
I have come across many of the claims you make in my reading, particularly among the Orthodox apologists. They hang on these forgeries like it's some kind of "gotcha", failing to understand that throughout history forgeries were as common as weeds in an neglected garden. It was a massive problem.
Again, I reiterate, everyone acknowledges those docuмents you mentioned were forgeries.
And again, what does this have to do with Vigilius?