[Bug]: Entra is still called Azure Active Directory

[abatishchev]

Describe the bug

See https://github.com/search?q=repo%3AAzure%2Ftypespec-azure-pr%20%22Azure%20Active%20Directory%20OAuth2%20Flow%22&type=code

Per https://learn.microsoft.com/en-us/entra/fundamentals/new-name#naming-changes-and-exceptions, it needs to be renamed

Reproduction

Here's a snippet from the top of a TypeSpec generated spec file:

"securityDefinitions": {
  "azure_auth": {
    "type": "oauth2",
    "description": "Azure Active Directory OAuth2 Flow.",
    "flow": "implicit",
    "authorizationUrl": "https://login.microsoftonline.com/common/oauth2/authorize",
    "scopes": {
      "user_impersonation": "impersonate your user account"
    }
  }
}

Checklist

• Follow our Code of Conduct
• Check that this issue is about the Azure libraries for typespec. For bug in the typespec language or core libraries file it in the TypeSpec repo
• Check that there isn't already an issue that request the same bug to avoid creating a duplicate.
• The provided reproduction is a minimal reproducible example of the bug.

[timotheeguerin]

also some references in the typespec.io docs to cleanup