pantheon.elementary-terminal: Backport shortcut fixes

This fixes unexpected behaviour with Ctrl+K / Ctrl+L.

pkgs/desktops/pantheon/apps/elementary-terminal/default.nix

@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  fetchpatch,
   nix-update-script,
   pkg-config,
   meson,
@@ -30,6 +31,21 @@ stdenv.mkDerivation rec {
     sha256 = "sha256-Pr2Jm37vuw1DOx63BXKT3oPK6C7i5v9ObYFNR6Hvhns=";
   };
 
+  patches = [
+    # Fix clear and reset actions when ongoing foreground process
+    # https://github.com/elementary/terminal/pull/823
+    (fetchpatch {
+      url = "https://github.com/elementary/terminal/commit/3c84bcb98ecdadb4d5e0c7a8f52fb5238f5e92f0.patch";
+      hash = "sha256-XViJR+vj+qy2A1nZa3Pdo8uY24tS4ZqZKjTAyPN9sPA=";
+    })
+    # Only reset/clear screen when <Shift> is pressed
+    # https://github.com/elementary/terminal/pull/827
+    (fetchpatch {
+      url = "https://github.com/elementary/terminal/commit/91b93d883c2b8a8549d9743292d6a564e3b2d3cb.patch";
+      hash = "sha256-3opiRhQLJCYFDwDjEbm0CZ9y8CF/6biU+cJk1Ideyks=";
+    })
+  ];
+
   nativeBuildInputs = [
     desktop-file-utils
     meson