[mehdimirzafaruk]

mocker.spy recognizes coroutine functions, but not objects whose __call__ method is async. Those objects currently get a MagicMock, so calls still return an awaitable and appear to work, but await assertions such as assert_awaited_once_with are unavailable and spy_return records the coroutine rather than its resolved value.

Detect an async __call__ and use AsyncMock for that non-autospecced target. This follows unittest.mock async semantics while preserving the existing autospec path for functions and methods.

The regression test uses a class-level async callable attribute. It fails on main because the spy is a MagicMock, and passes with the fix.

Validation:

• TestSpy: 21 passed
• non-introspection suite: 151 passed, 1 skipped
• pre-commit: rst, Ruff, Ruff format, mypy all passed
• full suite has the same 7 pytest 9.1 introspection failures on both main and this branch
• git diff --check passed

This is separate from #650, which changes context-manager warning behavior.