notification: use viewargs for notif_entity_updated instead of transaction_data Now that notifications use separate sessions, they can't rely on the original transaction_data being around, so pass the data through view arguments instead, so the notification view knows what changed on updated entities. Closes #2936180

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change_attribute_type('CWCache', 'timestamp', 'TZDatetime')

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change_attribute_type('CWUser', 'last_login_time', 'TZDatetime')

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change_attribute_type('CWSource', 'latest_retrieval', 'TZDatetime')

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drop_attribute('CWSource', 'synchronizing')

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add_attribute('CWSource', 'in_synchronization')