[Automatic Import] Change the integrations owner type to community (e…

…lastic#193002)

## Summary

Currently the integrations created by `Automatic Import` are set to
`elastic`. But `community` fits better.
Once the custom integrations generated by Automatic Import are moved
into upstream `elastic/integrations` repository appropriate owner type
can be defined in the contribution PR.

<img width="1354" alt="Screenshot 2024-09-16 at 14 12 17"
src="https://github.com/user-attachments/assets/26555f92-204d-4954-9e8d-0c268a0cf43d">

- Closes elastic#192917

### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

(cherry picked from commit fd67f2d)

x-pack/plugins/integration_assistant/server/integration_builder/build_integration.ts

@@ -174,7 +174,7 @@ function createPackageManifestDict(
     ],
     owner: {
       github: package_owner,
-      type: 'elastic',
+      type: 'community',
     },
   };