Issue #21642: Remove in-progress media tab from homescreen

[jonalmeida]

Not removing the other logic because we're going to re-add this after some refinement in the future.

To download an APK when reviewing a PR:

1. click on Show All Checks,
2. click Details next to "Taskcluster (pull_request)" after it appears and then finishes with a green checkmark,
3. click on the "Fenix - assemble" task, then click "Run Artifacts".
4. the APK links should be on the left side of the screen, named for each CPU architecture

[gabrielluong]

We could also wrap this behind a feature flag?

[jonalmeida]

Yeah, I wasn't sure to what extent we should be "removing it". So I opted for this solution so we can land it before the beta cut.

[jonalmeida]

Another reason I forgot about, is that we get intermittent test failures when we have feature flags here. See #21557.

[csadilek]

Let's land as is. Thought about this last week and it's a trade-off. We don't want feature flags to be too fine-grained, so arguably this is a change in behaviour of an existing feature, as opposed to a feature itself. We can revert this to enable again when we want it (have time to add media controls).

[csadilek]

Let's land as is. Thought about this last week and it's a trade-off. We don't want feature flags to be too fine-grained, so arguably this is a change in behaviour of an existing feature, as opposed to a feature itself. We can revert this to enable again when we want it (have time to add media controls).