fix: remove 'Enum' widget type and filter out foreign key widgets in table settings

[Artuomka]

No description provided.

[Copilot]

Pull request overview

This pull request removes the deprecated 'Enum' widget type from the backend and adds filtering logic to exclude Foreign_key widgets from AI-generated table settings.

Changes:

• Removed 'Enum' widget type from the WidgetTypeEnum enumeration
• Added logic to filter out Foreign_key widgets when building table settings from AI responses
• Removed 'Enum' from the widget type mapping in ai.service.ts

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
backend/src/enums/widget-type.enum.ts	Removes the deprecated 'Enum' widget type from the enumeration
backend/src/entities/ai/ai.service.ts	Adds Foreign_key widget filtering and removes 'Enum' from the widget type mapping

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