[2026-06-05] - Sync content (27023424975) (#75)

> [!NOTE]
> This PR copies content from the source repo.
> Source repo commit
[5545251](shoptet/cms4@5545251)

**List of changes:**
- Temporarily disable `treatPhpDocTypesAsCertain` in API SDK PHPstan due
to err in PHPdoc when return type of `mb_strlen()` is set as `int<1,
max>` but it can also be set to 0 for empty strings

Co-authored-by: xmalda <24293733+xmalda@users.noreply.github.com>

Author: shoptet-deploy

phpstan.neon.dist

@@ -10,6 +10,7 @@ parameters:
     reportAlwaysTrueInLastCondition: true
     checkMissingCallableSignature: true
     checkTooWideReturnTypesInProtectedAndPublicMethods: true
+    treatPhpDocTypesAsCertain: false
 
     bootstrapFiles:
         - build/phpstan.bootstrap.php