fix: fix integration templates insertion (#4104)

## Description

Previous change broke insertion of integration templates

## Steps for reproduction

1. click button
2. expect xyz

## Code Review

- [ ] hi @kof, I need you to do
  - conceptual review (architecture, feature-correctness)
  - detailed review (read every line)
  - test it on preview

## Before requesting a review

- [ ] made a self-review
- [ ] added inline comments where things may be not obvious (the "why",
not "what")

## Before merging

- [ ] tested locally and on preview environment (preview dev login:
5de6)
- [ ] updated [test
cases](https://github.com/webstudio-is/webstudio/blob/main/apps/builder/docs/test-cases.md)
document
- [ ] added tests
- [ ] if any new env variables are added, added them to `.env` file

apps/builder/app/builder/features/sidebar-left/panels/marketplace/templates.tsx

@@ -195,7 +195,10 @@ export const Templates = ({
                                   instanceId: templateData.rootInstanceId,
                                 });
                               }
-                              if (productCategory === "pageTemplates") {
+                              if (
+                                productCategory === "pageTemplates" ||
+                                productCategory === "integrationTemplates"
+                              ) {
                                 insertPage({
                                   data,
                                   pageId: templateData.pageId,