fix(l2,l1): bump spawned to 0.2.2

[tomip01]

Motivation

Currently we have in our Cargo.toml:

spawned-concurrency = "0.2.1"
spawned-rt = "0.2.1"

And our Cargo.lock has this versions.
However, external crates, like rex (see this), that depend on ethrex fail to compile it because they attempt to build it using the newer version 0.2.2.

I went for using the newer version instead of pining the older version.

Description

• Change spawned-* to 0.2.2
• Add InitResult on the init methods for the GenServer trait

[Copilot]

Pull Request Overview

Updates the spawned concurrency library versions from 0.2.1 to 0.2.2 to resolve compilation issues with external crates depending on ethrex. The key change is adapting to the updated GenServer trait that now requires returning InitResult<Self> instead of Self from init methods.

• Bump spawned-concurrency and spawned-rt versions to 0.2.2
• Update GenServer init method signatures to return InitResult
• Wrap existing self returns with InitResult::Success

Reviewed Changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

File	Description
Cargo.toml	Updates spawned library versions from 0.2.1 to 0.2.2
crates/networking/p2p/rlpx/connection/server.rs	Adds InitResult import and updates init method return type
crates/l2/sequencer/l1_watcher.rs	Updates GenServer init method to return InitResult::Success
crates/l2/monitor/app.rs	Updates GenServer init method to return InitResult::Success

[github-actions]

Lines of code report

Total lines added: 5
Total lines removed: 0
Total lines changed: 5

Detailed view

+--------------------------------------------------------+-------+------+
| File                                                   | Lines | Diff |
+--------------------------------------------------------+-------+------+
| ethrex/crates/l2/sequencer/l1_watcher.rs               | 339   | +2   |
+--------------------------------------------------------+-------+------+
| ethrex/crates/networking/p2p/rlpx/connection/server.rs | 796   | +3   |
+--------------------------------------------------------+-------+------+

[tomip01]

Closes in favor of #3840