Add regression test for Annotated ForwardRef dependency

[amulyakh456]

🧪 Regression Test

This PR adds a regression test covering the use of Annotated parameters
with ForwardRef in dependency injection.

🔍 Context

While investigating an existing issue, I verified that this behavior
works correctly on the current default branch with Python 3.12.
This test documents the expected behavior and guards against regressions.

📎 Related Issue

Refs #<ISSUE_NUMBER>

[codspeed-hq]

CodSpeed Performance Report

Merging this PR will not alter performance

_{Comparing amulyakh456:test-annotated-forwardref (49daf31) with master (ec07e62)¹}

Summary

✅ 20 untouched benchmarks

Footnotes

1. No successful run was found on master (2247750) during the generation of this report, so ec07e62 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩