Default DSpace considering Publications or Untyped Items as default entities for Homepage Recent and every Browse by filters

[paulo-graca]

Is your feature request related to a problem? Please describe.

I was initially considering this a Bug report, but I opted for a feature request instead. When DSpace introduced Entities in DS7, It made it optional, so that people that don't want to have it enabled it, could use DSpace as it was in earlier versions. Currently, DSpace community is considering to have Entities enabled by default. We enabled entities and load OpenAIRE's Entity model. And one of the things we didn't like in the default DSpace was the fact that Homepage Recent Submissions and the Browse By, showed us results for other entities besides what we were expecting. It felt odd because we here expecting to see the same behavior of DSpace without entities, meaning we expected to see those filters only applied to entities of type Publications and untyped items. That was also the feedback from our community during our Migration Pilot and I also got the same feedback from Giuseppe (4Science).
We need to have a clear idea of what is useful for our users. For instance, our users preferred to have only Publications and Untyped items at Recent Submissions at the home page, and have the default Discovery configuration to filter only for those types.

Describe the solution you'd like

We have done this work. Mainly it's just changing Angular Components (we have created a new one) and changes to Discovery to filter results based on whats make sense to users.

Additional information

Homepage recent submissions (only Publications and Untyped items)