Bug Report

Mypy incorrectly identifies an enum as final. This appears related to / caused by #11247.

To Reproduce

1. create an enum with uninitialized annotated variables and a __new__ method
2. extend the enum with the actual values for the enum

Expected Behavior

Mypy would not complain about the enum.

Actual Behavior

error: Cannot inherit from final class "TestEnum" [misc]

Your Environment

• Mypy version used: https://github.com/mypyc/mypy_mypyc-wheels/releases/tag/v0.920%2Bdev.89bb94a636790fc969979a47d8cb88e33a22c17e
• Mypy command-line flags:
• Mypy configuration options from mypy.ini (and other config files):

  [mypy]                                                                         
  allow_redefinition = true                                                      
  disable_error_code =                                                           
      override,                                                                  
      var-annotated                                                              
  mypy_path = types/                                                             
  plugins =                                                                      
      mypy_django_plugin.main                                            
      numpy.typing.mypy_plugin,                                                  
      mypy_drf_plugin.main                                                       
  pretty = true                                                                  
  show_error_codes = true                                                        
  show_error_context = true                                                      
  warn_redundant_casts = true                                                    
  warn_unused_ignores = true                                                     
  warn_unreachable = true
  

• Python version used: 3.10.0
• Operating system and version: N/A