feat(gcloud): Disabled gcloud module when active config hasn't been set (#6039)

* disabled gcloud module when active config hasn't been set

* added test case

* updated config-schema

src/modules/gcloud.rs

@@ -89,6 +89,10 @@ pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
     }
 
     let (config_name, config_path) = get_current_config(context)?;
+
+    if config_name == "NONE" {
+        return None;
+    }
     let gcloud_context = GcloudContext::new(&config_name, &config_path);
     let account: Lazy<Option<Account<'_>>, _> = Lazy::new(|| gcloud_context.get_account());
 
@@ -462,6 +466,16 @@ project = very-long-project-name
         dir.close()
     }
 
+    #[test]
+    fn no_active_config() {
+        let actual = ModuleRenderer::new("gcloud")
+            .env("CLOUDSDK_ACTIVE_CONFIG_NAME", "NONE")
+            .collect();
+        let expected = None;
+
+        assert_eq!(expected, actual);
+    }
+
     #[test]
     fn active_config_manually_overridden() -> io::Result<()> {
         let dir = tempfile::tempdir()?;