Send method arguments with numerics to the second pass

[xunilrj]

Description

This PR brings back encode/decode buffer ownership tests and closes #6567.

The original issue was that an error in the CI file was hiding that these tests were not compiling anymore.

IR generation now also tests the expression and the variant type match, giving a better error than before.

Checklist

• I have linked to any relevant issues.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation where relevant (API docs, the reference, and the Sway book).
  • If my change requires substantial documentation changes, I have requested support from the DevRel team
• I have added tests that prove my fix is effective or that my feature works.
• I have added (or requested a maintainer to add) the necessary Breaking* or New Feature labels where relevant.
• I have done my best to ensure that my PR adheres to the Fuel Labs Code Review Standards.
• I have requested a review from the relevant team or maintainers.

[codspeed-hq]

CodSpeed Performance Report

Merging #6700 will not alter performance

_{Comparing xunilrj/better-type-inf-numerics (ff196eb) with master (cbf0c62)}

Summary

✅ 22 untouched benchmarks