component: fix security declaration of checkConsistency

We don't need Permissions.ModifyPortalContent, Permissions.AccessContentsInformation
is enough. This is consistent with the security declarations in Base and
Folder.

https://lab.nexedi.com/nexedi/erp5/blob/08be2f8cc936fbdc3d5bafb4355c3a475198abc1/product/ERP5Type/Base.py#L2632

https://lab.nexedi.com/nexedi/erp5/blob/08be2f8cc936fbdc3d5bafb4355c3a475198abc1/product/ERP5Type/Core/Folder.py#L1434