Meta: Move build of gn module in flatpak build before angle

Author: https://github.com/JanKoudijs
Commit: 738c81877c
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5500
Reviewed-by: https://github.com/ADKaster ✅

Meta/CMake/flatpak/org.ladybird.Ladybird.json

@@ -82,6 +82,25 @@
         "/bin"
       ]
     },
+    {
+      "name": "gn",
+      "buildsystem": "simple",
+      "sources": [
+        {
+          "type": "git",
+          "url": "https://gn.googlesource.com/gn",
+          "commit": "f792b9756418af8ab8a91a4c15b582431cb86ff9"
+        },
+        {
+          "type": "file",
+          "path": "gn-whole-enchilada.sh"
+        }
+      ],
+      "build-commands": [
+        "./gn-whole-enchilada.sh"
+      ],
+      "cleanup": [ "*" ]
+    },
     {
       "name": "angle",
       "buildsystem": "simple",
@@ -209,25 +228,6 @@
         "-DCMAKE_INSTALL_LIBDIR=lib"
       ]
     },
-    {
-      "name": "gn",
-      "buildsystem": "simple",
-      "sources": [
-        {
-          "type": "git",
-          "url": "https://gn.googlesource.com/gn",
-          "commit": "f792b9756418af8ab8a91a4c15b582431cb86ff9"
-        },
-        {
-          "type": "file",
-          "path": "gn-whole-enchilada.sh"
-        }
-      ],
-      "build-commands": [
-        "./gn-whole-enchilada.sh"
-      ],
-      "cleanup": [ "*" ]
-    },
     {
       "name": "brotli",
       "buildsystem": "cmake-ninja",