feat: Disable session lock when running in element-desktop (#30643)

* feat: Disable session lock when running in element-desktop

* feat: Use Platform abstractions over direct invocation for session lock.

* fix: Remove window.electron checks from session lock methods.

* docs: Remove extraneous doc comments.

* feat: Convert BasePlatform session methods to abstract methods.

* fix: Check for PlatformPeg instance in session lock.

* fix: Remove async marker from checkSessionLockFree

src/vector/platform/ElectronPlatform.tsx

@@ -558,4 +558,12 @@ export default class ElectronPlatform extends BasePlatform {
         }
         return url;
     }
+
+    public checkSessionLockFree(): boolean {
+        return true;
+    }
+
+    public async getSessionLock(_onNewInstance: () => Promise<void>): Promise<boolean> {
+        return true;
+    }
 }

src/vector/platform/WebPlatform.ts

@@ -22,6 +22,7 @@ import ToastStore from "../../stores/ToastStore.ts";
 import GenericToast from "../../components/views/toasts/GenericToast.tsx";
 import SdkConfig from "../../SdkConfig.ts";
 import type { ActionPayload } from "../../dispatcher/payloads.ts";
+import * as SessionLock from "../../utils/SessionLock.ts";
 
 const POKE_RATE_MS = 10 * 60 * 1000; // 10 min
 
@@ -268,4 +269,12 @@ export default class WebPlatform extends BasePlatform {
     public reload(): void {
         window.location.reload();
     }
+
+    public checkSessionLockFree(): boolean {
+        return SessionLock.checkSessionLockFree();
+    }
+
+    public async getSessionLock(onNewInstance: () => Promise<void>): Promise<boolean> {
+        return SessionLock.getSessionLock(onNewInstance);
+    }
 }