V8: Move gn-peek step behind mb step

scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___arm64___sim___nosnap___debug.json

Index: scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___arm64___sim___nosnap___debug.json
diff --git a/scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___arm64___sim___nosnap___debug.json b/scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___arm64___sim___nosnap___debug.json
index 0c007cce8a88528f999d621c50a9bb13b367ead9..51904f87e8acce4af6b1c4dc067b9c487ca2a6e9 100644
--- a/scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___arm64___sim___nosnap___debug.json
+++ b/scripts/slave/recipes/v8.expected/full_client_v8_ports_V8_Linux___arm64___sim___nosnap___debug.json
@@ -151,6 +151,17 @@
     "cmd": [
       "python",
       "-u",
+      "RECIPE_PACKAGE_REPO[build]/scripts/tools/runit.py",
+      "--show-path",
+      "python",
+      "RECIPE_PACKAGE_REPO[build]/scripts/slave/cleanup_temp.py"
+    ],
+    "name": "cleanup_temp"
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "[DEPOT_TOOLS]/gn.py",
       "--root=[SLAVE_BUILD]/v8",
       "gen",
@@ -187,17 +198,6 @@
     ]
   },
   {
-    "cmd": [
-      "python",
-      "-u",
-      "RECIPE_PACKAGE_REPO[build]/scripts/tools/runit.py",
-      "--show-path",
-      "python",
-      "RECIPE_PACKAGE_REPO[build]/scripts/slave/cleanup_temp.py"
-    ],
-    "name": "cleanup_temp"
-  },
-  {
     "allow_subannotations": true,
     "cmd": [
       "python",