Fix inheritance of local configuration's allowed subtypes in subfolders of configured workspace

The local configuration's allowed subtypes that are configured in a workspace are not taken into account in underlying sub folders. They are taken into account in the JSF UI but not in the Web UI.

How to reproduce:

• in the JSF UI, create a workspace
• go to the created workspace's tab Manage > Local Configuration
• enable Document types Configuration and set Folder as the only Enabled Types. Click the Save button
• go to the Content tab and create a Folder document
• go to the created folder's Content tab and click the New button: only Folder is listed a *Available Document Types
• go to the same folder in the Web UI
• click on the + icon

Expected result: the CREATE tab in the creation dialog shows document type Folder only (from the parent workspace's local configuration)
Actual result: the CREATE tab in the creation dialog shows all the subtypes configured on the document type Folder, ignoring the local configuration set on the parent workspace