fix: Disable Notion import when env is not available (#8761)

plugins/notion/client/Imports.tsx

@@ -81,7 +81,12 @@ export const Notion = observer(() => {
   }, [t, appName, oauthError]);
 
   return (
-    <Button type="submit" onClick={() => redirectTo(authUrl)} neutral>
+    <Button
+      type="submit"
+      onClick={() => redirectTo(authUrl)}
+      disabled={!env.NOTION_CLIENT_ID}
+      neutral
+    >
       {t("Import")}…
     </Button>
   );

plugins/notion/server/env.ts

@@ -5,8 +5,8 @@ import environment from "@server/utils/environment";
 import { CannotUseWithout } from "@server/utils/validators";
 
 class NotionPluginEnvironment extends Environment {
-  @IsOptional()
   @Public
+  @IsOptional()
   public NOTION_CLIENT_ID = this.toOptionalString(environment.NOTION_CLIENT_ID);
 
   @IsOptional()