DID-Auth: Client not setting expiry for responseToken

[d1vyansh6upta]

As per the documentation here, the client should be able to configure the expiry of the responseToken, which is 12 hours by default.

However, as per the code implementation, the expiry for the responseToken is explicitly set to undefined as per code here.

This is contrary to intended behaviour because the createDidAuthResponseToken method of the DidAuthClientService does accept an options arguments which contains maxTokenValidInMs i.e. the intended expiry of the responseToken, but then does not actually set the expiry of the token as per this value.

Furthermore, the default expiry of 12 hours (as per the docs) too is not being set.