onboarding: Add fast-follow adjustments (#35814)

Release Notes:

- N/A

assets/keymaps/default-linux.json

@@ -1103,6 +1103,13 @@
       "ctrl-enter": "menu::Confirm"
     }
   },
+  {
+    "context": "OnboardingAiConfigurationModal",
+    "use_key_equivalents": true,
+    "bindings": {
+      "escape": "menu::Cancel"
+    }
+  },
   {
     "context": "Diagnostics",
     "use_key_equivalents": true,
@@ -1179,7 +1186,8 @@
       "ctrl-1": "onboarding::ActivateBasicsPage",
       "ctrl-2": "onboarding::ActivateEditingPage",
       "ctrl-3": "onboarding::ActivateAISetupPage",
-      "ctrl-escape": "onboarding::Finish"
+      "ctrl-escape": "onboarding::Finish",
+      "alt-tab": "onboarding::SignIn"
     }
   }
 ]

assets/keymaps/default-macos.json

@@ -1205,6 +1205,13 @@
       "cmd-enter": "menu::Confirm"
     }
   },
+  {
+    "context": "OnboardingAiConfigurationModal",
+    "use_key_equivalents": true,
+    "bindings": {
+      "escape": "menu::Cancel"
+    }
+  },
   {
     "context": "Diagnostics",
     "use_key_equivalents": true,
@@ -1281,7 +1288,8 @@
       "cmd-1": "onboarding::ActivateBasicsPage",
       "cmd-2": "onboarding::ActivateEditingPage",
       "cmd-3": "onboarding::ActivateAISetupPage",
-      "cmd-escape": "onboarding::Finish"
+      "cmd-escape": "onboarding::Finish",
+      "alt-tab": "onboarding::SignIn"
     }
   }
 ]