chore(workspace): Migrate back to thiserror v2

[clabby]

Overview

Migrates all crates back to thiserror, now that >=v2.0.0 has support for no_std with default-features = false.

closes #806

[clabby]

📚 $\text{Stack Overview}$

Pulls submitted in this stack:

• chore(workspace): Migrate back to thiserror v2 #811 👈
• main

This comment was automatically generated by st.

[codecov]

Codecov Report

Attention: Patch coverage is 25.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 91.8%. Comparing base (90552f1) to head (4421195).
Report is 2 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
crates/mpt/src/node.rs	0.0%	3 Missing ⚠️

Additional details and impacted files

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[refcell]

Very nice mr allen