Have Pamac perform AUR updates only for packages already installed from AUR

[fasto]

@anon89812132

AFAIK pamac will still prefer a package from repository over the AUR when updating, but, if a package from repository was dropped, then the AUR one will replace it.

Pamac suggesting AUR upgrades to Manjaro packages (stable branch)

I am on Manjaro stable. Today, Pamac suggested updating pamac-tray-icon-plasma 0.1.2-4 → 0.1.3-1 and v86d 0.1.10-6 → 0.1.10-12, both from the AUR. I have both of them installed from the official Manjaro repos, not the AUR. Should I download these updates, or wait until they are propagated into the official repos?