Do not block third-party cookies globally, use uMatrix

desktop.nix

@@ -97,6 +97,7 @@ in {
     enable = true;
     extensions = [
       "cjpalhdlnbpafiamejdnhcphjbkeiagm" # uBlock Origin
+      "ogfcmafjalglgifnmanfmnieipoejdcf" # uMatrix
       "gcbommkclmclpchllfjekcdonpmejbdp" # HTTPS Everywhere
       "dbepggeogbaibhgnhhndojpepiihcmeb" # Vimium
       "aapbdbdomjkkjkaonfhkkikfgjllcleb" # Google Translate
@@ -120,7 +121,6 @@ in {
       PromotionalTabsEnabled = false;
 
       SyncDisabled = true;
-      BlockThirdPartyCookies = true;
 
       SigninAllowed = false;
       AudioCaptureAllowed = false;