treewide: Fix broken desktop files and mark packages as broken

This fixes all packages that are failed `nixpkgs-review` in #91790.
Packages that were broken prior to that PR were marked as broken.
Packages that failed because of #75729 were fixed.

pkgs/applications/misc/toggldesktop/default.nix

@@ -139,6 +139,7 @@ buildEnv {
   paths = [ desktopItem toggldesktop-icons toggldesktop-wrapped ];
 
   meta = with lib; {
+    broken = true; # libtoggl is broken
     description = "Client for Toggl time tracking service";
     homepage = "https://github.com/toggl/toggldesktop";
     license = licenses.bsd3;

pkgs/applications/networking/ostinato/default.nix

@@ -39,6 +39,7 @@ stdenv.mkDerivation rec {
       GenericName[it]=Generatore ed Analizzatore di pacchetti di rete
       Comment[it]=Generatore ed Analizzatore di pacchetti di rete con interfaccia amichevole
     '';
+    fileValidation = false;
   };
 
   postInstall = ''

pkgs/applications/networking/termius/default.nix

@@ -59,6 +59,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
+    broken = true;
     description = "A cross-platform SSH client with cloud data sync and more";
     homepage = "https://termius.com/";
     downloadPage = "https://termius.com/linux/";

pkgs/applications/science/math/sage/sage.nix

@@ -61,6 +61,7 @@ stdenv.mkDerivation rec {
   };
 
   meta = with stdenv.lib; {
+    broken = true;
     description = "Open Source Mathematics Software, free alternative to Magma, Maple, Mathematica, and Matlab";
     license = licenses.gpl2;
     maintainers = with maintainers; [ timokau ];

pkgs/games/frogatto/default.nix

@@ -34,6 +34,7 @@ in buildEnv {
   '';
 
   meta = with stdenv.lib; {
+    broken = true;
     homepage = "https://frogatto.com";
     description = description;
     license = with licenses; [ cc-by-30 unfree ];

pkgs/games/tdm/default.nix

@@ -16,6 +16,7 @@ let
     type = "Application";
     categories = "Game;";
     genericName = pname;
+    fileValidation = false;
   };
 in stdenv.mkDerivation {
   name = "${pname}-${version}";

pkgs/games/tome2/default.nix

@@ -14,6 +14,7 @@ let
     type = "Application";
     categories = "Game;RolePlaying;";
     genericName = pname;
+    fileValidation = false;
   };
 
 in stdenv.mkDerivation {