Fixed a bug that results in noncompliance with the typing spec when a…

[erictraut]

… __new__ method has an explicit Any return type annotation. In this case, type checkers should assume that the return type of __new__ is not a subtype of the containing class and should therefore ignore the __init__ method. This addresses #9909.

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

sympy (https://github.com/sympy/sympy)
- /tmp/mypy_primer/projects/sympy/sympy/physics/quantum/circuitplot.py
-   /tmp/mypy_primer/projects/sympy/sympy/physics/quantum/circuitplot.py:367:20 - error: No overloads for "__init__" match the provided arguments
-     Argument types: (Unknown, Unknown) (reportCallIssue)
-   /tmp/mypy_primer/projects/sympy/sympy/physics/quantum/circuitplot.py:369:48 - error: Expected 0 positional arguments (reportCallIssue)
-   /tmp/mypy_primer/projects/sympy/sympy/physics/quantum/tests/test_circuitplot.py:18:12 - error: No overloads for "__new__" match the provided arguments (reportCallIssue)
-   /tmp/mypy_primer/projects/sympy/sympy/physics/quantum/tests/test_circuitplot.py:18:16 - error: Argument of type "__class_CreateOneQubitGate" cannot be assigned to parameter "object" of type "ReadableBuffer" in function "__new__"
-     "__class_CreateOneQubitGate" is incompatible with protocol "Buffer"
-       "__buffer__" is not present (reportArgumentType)
-   /tmp/mypy_primer/projects/sympy/sympy/physics/quantum/tests/test_circuitplot.py:18:22 - error: Expected 0 positional arguments (reportCallIssue)
- 33107 errors, 73 warnings, 0 informations 
+ 33102 errors, 73 warnings, 0 informations 

core (https://github.com/home-assistant/core)
-   /tmp/mypy_primer/projects/core/homeassistant/helpers/entity_registry.py:91:39 - error: Argument of type "enumerate[Unknown]" cannot be assigned to parameter "iterable" of type "Iterable[list[bytes]]" in function "__init__"
-     "enumerate[Unknown]" is incompatible with protocol "Iterable[list[bytes]]"
-       "__iter__" is an incompatible type
-         Type "() -> enumerate[Unknown]" is not assignable to type "() -> Iterator[_T_co@Iterable]"
-           Function return type "enumerate[Unknown]" is incompatible with type "Iterator[_T_co@Iterable]"
-             "enumerate[Unknown]" is incompatible with protocol "Iterator[_T_co@Iterable]" (reportArgumentType)
- 65799 errors, 293 warnings, 0 informations 
+ 65798 errors, 293 warnings, 0 informations 

antidote (https://github.com/Finistere/antidote)
+   /tmp/mypy_primer/projects/antidote/src/antidote/__init__.py:141:34 - warning: Unnecessary "# type: ignore" comment (reportUnnecessaryTypeIgnoreComment)
- 744 errors, 77 warnings, 0 informations 
+ 744 errors, 78 warnings, 0 informations 

spark (https://github.com/apache/spark)
-   /tmp/mypy_primer/projects/spark/python/pyspark/sql/tests/test_observation.py:49:13 - error: Object of type "Dict[str, Any]" is not callable
-     Attribute "__call__" is unknown (reportCallIssue)
-   /tmp/mypy_primer/projects/spark/python/pyspark/sql/tests/test_observation.py:94:25 - error: Argument of type "Literal[123]" cannot be assigned to parameter "name" of type "str | None" in function "__init__"
-     Type "Literal[123]" is not assignable to type "str | None"
-       "Literal[123]" is not assignable to "str"
-       "Literal[123]" is not assignable to "None" (reportArgumentType)
- 26077 errors, 327 warnings, 0 informations 
+ 26075 errors, 327 warnings, 0 informations 

tornado (https://github.com/tornadoweb/tornado)
+   /tmp/mypy_primer/projects/tornado/tornado/test/ioloop_test.py:466:26 - error: "add_callback" is not a known attribute of "None" (reportOptionalMemberAccess)
+   /tmp/mypy_primer/projects/tornado/tornado/test/ioloop_test.py:467:26 - error: "start" is not a known attribute of "None" (reportOptionalMemberAccess)
- 312 errors, 66 warnings, 0 informations 
+ 314 errors, 66 warnings, 0 informations