Batch sharing permission when grouping by ISA

[floradanna]

Based on the documentation, batch sharing shows items own by the user. https://help.datahub-test.elixir-belgium.org/help/user-guide/bulk-change-sharing-permission.html

However, if the user owns samples/assets in a ISA created by other users, that ISA doesn't show under "in ISA" and those samples/assets are listed only under "not in ISA"