[BUG] Crosseling on product page

[lbebnowicz]

description of an issue is placed after acceptance criteria chapter

Acceptance criteria

• cross sellings includes & associations params are removed from defaults useCms and useProduct sections.
• cross sellings are being fetched async in onMounted callback
• /store-api/v{version}/product/{productId}/cross-selling endpoint is used in order to fetch existing cross sellings

Describe the bug

assigned product aren't present anymore within cross sellings relation for product entity (v6.5.3.1)
cross selling products are not displayed on product page

because assigned products are not comming from backend

Provide reproduction steps, example:

• i've assign couple products in panel admin and made it active

Additional context

pwa 0.7.1
shopware 6.3.5.1

[mkucmus]

thanks @lbebnowicz, we noticed missing assignedProducts within crossSellings as well, and we are going to implement it asynchronously, fetching cross sellings from another endpoint (already available).