bevy_remote doesn't work with dynamic components

`bevy_remote` treats dynamic components as non-existing, with the exception of the `list` method when applied to an entity (but not globally).

There are two obstacles to solving this:
- BRP identifies components by name. This could be solved by switching to component ids and adding a method to get the corresponding component name (and component mutability while we're at it). Alternatively, uniqueness could be enforced for component names & a name → component id index could be built.
- #14404, which blocks ser/de for dynamic components. But even without that, we should still be able to list and remove dynamic components.