fix: self-referential foreign key recursion (#709)

* fix: stop self-referential FK recursion

Split direct foreign-key discovery from the shared-key fallback heuristics so self-referential and non-conventional navigation names don't recurse through ForeignKeyProperty while model validation is still trying to classify the relationship.

tests(perf): share openAPI docs between tests

feat: migrate template test project from xUnit to TUnit (#661)

chore(deps): bump azure/login (#679)

Bumps [azure/login](https://github.com/azure/login) from 2 to 3.
- [Release notes](https://github.com/azure/login/releases)
- [Commits](Azure/login@v2...v3)

---
updated-dependencies:
- dependency-name: azure/login
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

fix: handle type names on C# 14 extension blocks

chore(deps): bump actions/github-script (#663)

Bumps [actions/github-script](https://github.com/actions/github-script) from 7 to 8.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@v7...v8)

---
updated-dependencies:
- dependency-name: actions/github-script
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

chore: update workflow names

Release 6.1.1

Release 6.1.0

Release 6.0.4