fix arc

Author: jiasli

src/azure-cli-core/azure/cli/core/_profile.py

@@ -468,7 +468,7 @@ def get_raw_token(self, resource=None, scopes=None, subscription=None, tenant=No
                 raise CLIError("Tenant shouldn't be specified for managed identity account")
             if _on_azure_arc():
                 from .auth.msal_credentials import ManagedIdentityCredential
-                sdk_cred = ManagedIdentityCredential()
+                sdk_cred = CredentialAdaptor(ManagedIdentityCredential())
             else:
                 from .auth.util import scopes_to_resource
                 sdk_cred = MsiAccountTypes.msi_auth_factory(managed_identity_type, managed_identity_id,