Desktop: Update CEF to v140 (#3277)

* update cef to v140

* fix build

* update flake

.nix/flake.lock

@@ -34,11 +34,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1754214453,
-        "narHash": "sha256-Q/I2xJn/j1wpkGhWkQnm20nShYnG7TI99foDBpXm1SY=",
+        "lastModified": 1760038930,
+        "narHash": "sha256-Oncbh0UmHjSlxO7ErQDM3KM0A5/Znfofj2BSzlHLeVw=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "5b09dc45f24cf32316283e62aec81ffee3c3e376",
+        "rev": "0b4defa2584313f3b781240b29d61f6f9f7e0df3",
         "type": "github"
       },
       "original": {
@@ -63,11 +63,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1753238793,
-        "narHash": "sha256-jmQeEpgX+++MEgrcikcwoSiI7vDZWLP0gci7XiWb9uQ=",
+        "lastModified": 1760236527,
+        "narHash": "sha256-h9+WEQtUIZaZMvA1pnbZbMM+5X39OFnW92Q8hNoToD0=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "0ad7ab4ca8e83febf147197e65c006dff60623ab",
+        "rev": "a38dd7f462825c75ce8567816ae38c2e7d826bfa",
         "type": "github"
       },
       "original": {

.nix/flake.nix

@@ -75,14 +75,7 @@
         '';
         rustGpuPathOverride = "${rustGpuCargo}/bin:${rustGPUToolchainPkg}/bin";
 
-        libcef = pkgs.libcef.overrideAttrs (finalAttrs: previousAttrs: {
-          version = "139.0.17";
-          gitRevision = "6c347eb";
-          chromiumVersion = "139.0.7258.31";
-          srcHash = "sha256-kRMO8DP4El1qytDsAZBdHvR9AAHXce90nPdyfJailBg=";
-
-          __intentionallyOverridingVersion = true;
-
+        libcef = pkgs.libcef.overrideAttrs (_: _: {
           postInstall = ''
             strip $out/lib/*
           '';