Add entity conflict summary table

[matthew-white]

For two stories in v2023.5 (#504 and #505), we need a table to summarize unresolved entity conflicts. This issue is to create a component for that table that can be used on either the entities data page or the entity detail page.

[matthew-white]

Most of the work for this was done in getodk/central-frontend#894. However, I need to write tests, including for the following cases:

• Test that the status icon is correct for a historical version that was a conflict and is now resolved.
• Test the return from the update modal:
  • If there was an update, then the table should be refreshed.
  • If there wasn't an update, then there should be no request. However, the table should still be visible.

[matthew-white]

I didn't finish writing these tests before the release of v2023.5, so I've filed a new issue to do so: getodk/central-frontend#923. Even though the conflict summary table passed QA, I think it's important that we have tests of this functionality.