Restrict WebAuthn to Windows only for Electron (#322)

src/electron/services/electronPlatformUtils.service.ts

@@ -130,8 +130,10 @@ export class ElectronPlatformUtilsService implements PlatformUtilsService {
         return remote.app.getVersion();
     }
 
+    // Temporarily restricted to only Windows until https://github.com/electron/electron/pull/28349
+    // has been merged and an updated electron build is available.
     supportsWebAuthn(win: Window): boolean {
-        return true;
+        return process.platform === 'win32';
     }
 
     supportsDuo(): boolean {