Steps to reproduce:

1. Configure at least two different languages on eZ Platform EE. For instance eng-GB and fre-FR.
2. Create a Landing Page in eng-GB. Add some blocks and publish it.
3. Add fre-FR translation. Add some blocks and publish it.
4. Check both translations, each of them should be fine.
5. Remove fre-FR translation.
6. Check LandingPage.

Result:
All blocks from all translations will be removed after removing one translation.

Expected result:
Landing Page translation should be removed, but all other translations should stay untouched.

Note from the customer:

function loadPagesMappedToContent does not care about the $fieldIds argument that it received then it does not know what to do and remove all.

This argument contains the field IDs of $contentId to be removed, which are all the attribute id related to the French version.

That is it we just need to adapt `loadPagesMappedToContent` to use those ids.

    public function deleteFieldData(VersionInfo $versionInfo, array $fieldIds, array $context)
    {
        // somehow get the translation information from `$fieldIds` then pass that to loadPagesMappedToContent
        // and filter the return of loadPagesMappedToContent to return ONLY the page related to the CORRECT translation / $fieldIds
        
        $pages = $this->gateway->loadPagesMappedToContent($versionInfo->contentInfo->id, $versionInfo->versionNo);

        foreach ($pages as $page) {
            $this->removePage((int) $page['id']);
        }
    }