Custom Policy Not SUpported

[simon-lighthouse]

Describe the bug I've followed the setup steps and set up my MSAL configuration as per reproduce steps to adda custom policy, but I am receiving a pydantic error:

pydantic_core._pydantic_core.ValidationError: 1 validation error for IDTokenClaims
tfp
  Input should be 'AAD_SINGLE', 'AAD_MULTI', 'B2C_1_LOGIN', 'B2C_1_PROFILE' or 'B2C_1A_LOGIN' [type=enum, input_value='B2C_1_signup_signin', input_type=str]      
    For further information visit https://errors.pydantic.dev/2.8/v/enum

To Reproduce Steps to reproduce the behavior:

1. Set up the client config with the following:

   client_config: MSALClientConfig = MSALClientConfig()
   client_config.client_id = os.getenv("CLIENT_ID")
   client_config.client_credential = "The client_credential retrieved at step #1"
   client_config.tenant = os.getenv("TENANT_ID")
   client_config.b2c_policy = "B2C_1_signup_signin"

2. Run the users/me endpoint

Expected behavior This should return the users/me response correctly, but instead a pydantic error is thrown as above

Environment Settings

• OS: [Windows]
• Python Version: 3.12
• Packages Versions: [msal 1.3 / fastapi 0.111.1 / fastapi_msal 2.15 / pydantic 2.8.2 ]

[dudil]

HI @simon-lighthouse Thank you for finding this issue 🙏 I would resolve it and issue a new release with the fix

[simon-lighthouse]

Great fix, works perfectly! Your library is great!