add option to not have ability to delete built in attributes (defs and names)

like this

1. if this is true, attribute definitions can only be deleted via gsh or WS, to prevent accidental deletion, including cascading deletion of all attribute names and their assignments
2. {valueType: "boolean", required: true}

   uiV2.attributeDef.preventDeleteBuiltInInUi = false

1. if this is true, attribute names can only be deleted via gsh or WS, to prevent accidental deletion, including cascading deletion of all attribute assignments
2. {valueType: "boolean", required: true}

   uiV2.attributeDefName.preventDeleteBuiltInInUi = false

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