texstudio: disable auto update

Disable auto update by applying the patch from Debian. From its
description:

> This patch sets the auto update configuration value to false by
> default and disables the update checkbox, the corresponding time
> interval, the "Check Now" button and the update level.

The program ignores any auto update settings already present in the
config, so this patch works as expected even if Texstudio was already
installed.

pkgs/by-name/te/texstudio/package.nix

@@ -2,6 +2,7 @@
   stdenv,
   lib,
   fetchFromGitHub,
+  fetchpatch2,
   cmake,
   qt6,
   qt6Packages,
@@ -40,6 +41,14 @@ stdenv.mkDerivation (finalAttrs: {
     qt6.qtwayland
   ];
 
+  patches = [
+    (fetchpatch2 {
+      name = "disable-auto-update.patch";
+      url = "https://sources.debian.org/data/main/t/texstudio/4.9.1%2Bds-1/debian/patches/0004-disable-auto-update.patch";
+      hash = "sha256-w4/u8ObJSQqHisZmxMSpJeveE+DJSgLqnfpEnizHsBg=";
+    })
+  ];
+
   postInstall = lib.optionalString stdenv.hostPlatform.isDarwin ''
     mkdir -p "$out/Applications"
     mv "$out/bin/texstudio.app" "$out/Applications"