Make all tasks switching tasks

[pinges]

Description

At the moment we have "switching" tasks, that go through the list of our peers when it is necessary to retry a task, and we have "retrying" tasks, that select the "best" peer every time we need to retry that task. As the best peer was selected the first time this task was called, there is a very good chance that we are selecting the same peer to retry that task. It makes more sense to select a different peer, which the "switching" tasks do.

Make sure that all tasks behave the same when getting a "useless" response. At the moment we have cases where we are returning an Optional.empty() and cases where we throw a IncompleteResultsException.

Make sure that we are doing the switch to another peer when needed. I think that we are not always doing that for "useless" responses.

There are tasks that we want to call with a specific peer, like getting a block or transaction when it was announced by one of our peers. We need to make sure that this can still happen.

Acceptance Criteria

• There are no 'retrying' tasks left

[fab-10]

this is partially implemented in #5508 and #5509

[non-fungible-nelson]

Need a status on this ticket

[Matilda-Clerke]

This might be a bit redundant after my refactoring work is in place. See https://www.notion.so/consensys/EthTask-and-EthPeer-system-ba1f00f85f5e4b9c94a0dd9c661f2c5c?d=d8303d044a8d40e590b48ea29885e154#567a120382c544a9b6e9431a3c951926 and #7602

[non-fungible-nelson]

Closing in favor of #7602