Add unsupported tools validation and new content types to evaluators validators

[m7md7sien]

Description

• Add check_for_unsupported_tools validation for agentic evaluators
• Support new content types: function_call, mcp_approval_request, openapi_call, and their outputs
• Fix minor typos in docstrings

All SDK Contribution checklist:

• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
• I have read the contribution guidelines.

General Guidelines and Best Practices

• Title of the pull request is clear and informative.
• There are a small number of commits, each of which have an informative message. This means that previously merged commits do not appear in the history of the PR. For more information on cleaning up the commits in your PR, see this page.

Testing Guidelines

• Pull request includes test coverage for the included changes.

[Copilot]

Pull request overview

This pull request enhances the Azure AI Evaluation SDK's validator infrastructure to support new content types and adds validation for unsupported tools in agentic evaluators. The changes enable the SDK to handle emerging tool call patterns (function calls, MCP approval workflows, OpenAPI calls) while preventing usage of known unsupported tools.

Changes:

• Added six new content types to support function calls, MCP approval requests/responses, and OpenAPI calls with their outputs
• Implemented unsupported tools validation via check_for_unsupported_tools flag in conversation validators
• Fixed typo in task navigation efficiency evaluator docstring
• Relaxed validation for tool result fields from requiring dictionary type to only requiring field existence

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
_validation_constants.py	Added six new ContentType enum values for function_call, function_call_output, mcp_approval_request, mcp_approval_response, openapi_call, and openapi_call_output
_conversation_validator.py	Added UNSUPPORTED_TOOLS list, check_for_unsupported_tools parameter, _validate_field_exists method, and validation logic for new content types
_tool_definitions_validator.py	Added check_for_unsupported_tools parameter and propagated it to parent class
_tool_calls_validator.py	Added check_for_unsupported_tools parameter and propagated it to parent class
_tool_output_utilization.py	Enabled unsupported tools validation by setting check_for_unsupported_tools=True
_tool_input_accuracy.py	Enabled unsupported tools validation by setting check_for_unsupported_tools=True
_tool_call_success.py	Enabled unsupported tools validation by setting check_for_unsupported_tools=True
_tool_call_accuracy.py	Enabled unsupported tools validation by setting check_for_unsupported_tools=True
_groundedness.py	Enabled unsupported tools validation by setting check_for_unsupported_tools=True
_task_navigation_efficiency.py	Fixed typo in docstring (removed extra quote before "call_tool_A")