[PM-16837] Fix agent only loading when featureflag is on during startup (#12742)

* Fix ssh generation and import not being available when agent feature-flag is disabled

* Fix agent only loading when featureflag is on during startup

apps/desktop/src/platform/preload.ts

@@ -74,6 +74,9 @@ const sshAgent = {
     });
     return res;
   },
+  isLoaded(): Promise<boolean> {
+    return ipcRenderer.invoke("sshagent.isloaded");
+  },
 };
 
 const powermonitor = {