In 'External' IdP user tenant name is not being sent in the DCR call which results in error

[Niveathika]

Description:
In 'External' IdP user tenant name is not being sent in the DCR call which results in error.

Suggested Labels:
Bug

Affected Product Version:
SP4.0.0.beta3

Steps to reproduce:

1. Add configurations,
   auth.cofigs:
   type:external
2. Start SP