Can't connect to two locations in one instance at same time

[jakub-tldr]

Screen.Recording.2026-08-14.at.09.53.15.mov

TODO: check if two locations with overlapping Allowed IPs are allowed.

[moubctez]

This happens only when both connections have All traffic.

[kchudy]

@moubctez Please provide screen with the error message so @Va1ter can decide on the final UI.