Fix for mypy 1.14.1

[luigiw]

Description

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• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
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Testing Guidelines

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[Copilot]

Pull Request Overview

This PR addresses MyPy 1.14.1 type errors by refining type annotations, unifying import fallbacks, and adding safer attribute access in legacy modules.

• Replaced generic Sequence/Mapping aliases with concrete List imports where mutation is expected.
• Removed intermediate TypeAlias assignments and exposed fallback classes/functions directly in legacy adapters.
• Wrapped model imports in TYPE_CHECKING guards and added getattr/hasattr checks to avoid runtime KeyErrors.

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
_batch_engine/_run_submitter.py	Switched Sequence[str] to List[str] and tightened previous type.
_batch_engine/_engine.py	Converted pending tasks set to list and updated input type to List.
_adapters/utils.py, client.py, _flows.py, _errors.py	Removed TypeAlias exports and streamlined fallback definitions.
_converters/_models.py	Added TYPE_CHECKING imports, used hasattr/getattr guards, and adjusted error handling.
_common/onedp/_types.py	Introduced Any fallbacks for missing model references.
_azure/_envs.py	Simplified nested .get(...) calls for cloud metadata lookup.

Comments suppressed due to low confidence (3)

sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_converters/_models.py:9

• The fallback assignment for RunStepFunctionToolCall is inside if TYPE_CHECKING: and won’t execute at runtime, causing a NameError. Move or replicate the fallback definition outside the TYPE_CHECKING guard.

if TYPE_CHECKING:

sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_converters/_models.py:255

• This arguments block has been dedented out of the elif scope, so options may be undefined or stale. It should be indented under the file_search branch.

            arguments = {

sdk/evaluation/azure-ai-evaluation/azure/ai/evaluation/_legacy/_batch_engine/_engine.py:273

• [nitpick] Converting a set of pending tasks to a list yields arbitrary ordering, which could lead to non-deterministic task scheduling. If order matters, consider a deterministic structure.

            pending = list(pending)  # Convert set back to list

[Copilot]

[nitpick] Catching a bare except: can mask unexpected errors. It's better to catch specific exceptions (e.g., except AttributeError: or except Exception:).

Suggested change

	except:
	except (AttributeError, TypeError) as e:
	# Log the error for debugging purposes
	print(f"Error occurred while processing tool_call details: {e}")

[Copilot]

[nitpick] The Union[str, str, ...] includes str twice, which is redundant. Removing the duplicate entry will simplify the type definition.