Populated topics view shows 'no topics' when loading

[ivpanda]

When first visiting a cluster, there are some instances where topics DO exist, but the "No topics found" empty state is shown very briefly. Can we fix this somehow, or add a 'No topics' loading state?

[weeco]

@ivpanda Do you mean that we differentiate between "the table is empty, because it's loading" and "the table is empty because no content exists"? If so, how do you want the "table is empty, because it's loading" page should look like? Shouldn't be a problem to add

[ivpanda]

I meant "table is empty, because it's loading"— we shouldn't show our "No content exists" while that content loads. We should show a loading spinner (or if we can't do that, leave the box empty with no content at all until the content loads).

[jvorcak]

Waiting for https://github.com/redpanda-data/ui/pull/492 to be merged