security: enable preload sandbox on game and tab windows

src/main/index.ts

@@ -307,7 +307,7 @@ async function launchApp(): Promise<void> {
       session: ses,
       contextIsolation: false,
       nodeIntegration: false,
-      sandbox: false,
+      sandbox: true,
       spellcheck: false,
       backgroundThrottling: false,
     },

src/main/tab-manager.ts

@@ -253,7 +253,7 @@ export class TabManager {
                 session: this.ses,
                 contextIsolation: false,
                 nodeIntegration: false,
-                sandbox: false,
+                sandbox: true,
                 spellcheck: false,
             },
         });