Improve error handling when processing a signature

[damiramirez]

We should improve how we handle errors in this section:

incredible-squaring-avs-rs/crates/aggregator/src/lib.rs

Lines 335 to 339 in 9b7c0b3

	if result.is_err() {
	info!("Response received for task that was already completed");
	// TODO: Review if we need to return an error here
	return Ok(());
	}

Currently, it doesn’t clearly distinguish whether the error is due to the task being already completed or if it’s caused by another issue.