fix: mailspring not recognizing keyring on niri

modules/capabilities/pim.nix

@@ -16,6 +16,9 @@ in
       ...
     }:
     let
+      mailspring = pkgs.mailspring.override {
+        commandLineArgs = "--password-store=gnome-libsecret";
+      };
       mkOffice365Account =
         {
           address,
@@ -63,8 +66,8 @@ in
         };
     in
     {
-      home.packages = [ pkgs.mailspring ];
-      xdg.mimeApps.defaultApplicationPackages = [ pkgs.mailspring ];
+      home.packages = [ mailspring ];
+      xdg.mimeApps.defaultApplicationPackages = [ mailspring ];
 
       programs.thunderbird = {
         enable = true;