Fix error in legacyRegisterApi on main (#5426)

src/common/k8s-api/kube-api.ts

@@ -312,12 +312,23 @@ export interface DeleteResourceDescriptor extends ResourceDescriptor {
  * @deprecated In the new extension API, don't expose `KubeApi`'s constructor
  */
 function legacyRegisterApi(api: KubeApi<any, any>): void {
-  const di = getEnvironmentSpecificLegacyGlobalDiForExtensionApi(Environments.renderer);
-
-  if (di) {
+  try {
+    /**
+     * This function throws if called in `main`, so the `try..catch` is to make sure that doesn't
+     * leak.
+     *
+     * However, we need this code to be run in `renderer` so that the auto registering of `KubeApi`
+     * instances still works. That auto registering never worked or was applicable in `main` because
+     * there is no "single cluster" on `main`.
+     *
+     * TODO: rearchitect this design pattern in the new extension API
+     */
+    const di = getEnvironmentSpecificLegacyGlobalDiForExtensionApi(Environments.renderer);
     const autoRegistrationEmitter = di.inject(autoRegistrationEmitterInjectable);
 
     autoRegistrationEmitter.emit("kubeApi", api);
+  } catch {
+    // ignore error
   }
 }