ci(github): update devops template workflows

[ncipollina]

Summary

Updates the remaining Lambda hosting workflows from the old devops-templates@v6.2 references to v10.2. This also removes inputs that are not valid for the reusable workflows and keeps the package build docs path filters aligned with the uv-based docs dependency files.

Changes

• Updated .github/workflows/pr-build.yaml to use LayeredCraft/devops-templates/.github/workflows/pr-build.yaml@v10.2.
• Removed the unsupported testDirectory input from the PR build reusable workflow call.
• Updated .github/workflows/build.yaml to use LayeredCraft/devops-templates/.github/workflows/package-build.yaml@v10.2.
• Removed unsupported package-build inputs: useMtpRunner and testDirectory.
• Replaced the old requirements.txt path ignore with pyproject.toml and uv.lock.

Validation

• Reviewed reusable workflow inputs against the current devops-templates workflow definitions.
• No local build required; workflow configuration only.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Add MTP runner selection before switching PR template

With this upgrade, the v10.2 reusable PR workflow takes the existing useMtpRunner: true/enableCodeCoverage: true inputs and runs its MTP coverage path (dotnet test --solution ... --report-xunit-trx --coverage). The dotnet test CLI docs say MTP mode must be selected in global.json, while VSTest remains the default; I checked the repo with rg --files and there is no global.json, so PR builds will run the default VSTest parser and fail on the MTP-only options. Add the global.json test runner selection, or avoid the v10.2 MTP path until the repo opts into it.

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