Fix @k8slens/extensions being broken after monorepo (#7058)

Signed-off-by: Sebastian Malton <sebastian@malton.name>

packages/open-lens/src/main/index.ts

@@ -1,7 +1,8 @@
 import { createContainer } from "@ogre-tools/injectable";
 import { autoRegister } from "@ogre-tools/injectable-extension-for-auto-registration";
 import { runInAction } from "mobx";
-import { createApp, extensionApi } from "@k8slens/core/main";
+import { createApp, MainApi } from "@k8slens/core/main";
+import { CommonApi } from "@k8slens/core/common";
 
 const di = createContainer("main");
 const app = createApp({
@@ -29,10 +30,12 @@ app.start().catch((error) => {
   process.exit(1);
 })
 
-const { Mobx, LensExtensions, Pty } = extensionApi;
-
 export {
   Mobx,
-  LensExtensions,
-  Pty
-};
+  Pty,
+} from "@k8slens/core/main";
+
+export const LensExtensions = {
+  Main: MainApi,
+  Common: CommonApi,
+}