[BUG] Gate open and remove actions in relation tables on element permissions

[Jonathon-Meney-Torq]

Summary

• Added hasAccess and canEdit boolean flags to RelatedElementData schema
• ElementDataService::getRelatedElementData() computes per-element access using classic admin AbstractElement::isAllowed() — hasAccess from view permission on the related element, canEdit from save or publish permission on the parent object
• Introduced RelationNormalizationContext service to pass the parent Concrete object into ElementDataService during normalization without changing interface signatures
• DataService::getDetailObjectData() sets and clears the context via try/finally
• GridSearch::searchElementsForUser() skips workspace path and user restrictions when the request is a system.ids filter query, so custom field columns load for relation items regardless of workspace access
• ElementProviderTrait::getElementType() visibility changed from private to protected to allow subclassing

[codacy-production]

Not up to standards ⛔

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[sonarqubecloud]

Quality Gate failed

Failed conditions
2 New Major Issues (required ≤ 0)

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