Incorrect authority parsing in MergedOptions.ParseAuthorityIfNecessary

[JoshLozensky]

Microsoft.Identity.Web Library

Microsoft.Identity.Web

Microsoft.Identity.Web version

3.7.1

Web app

Not Applicable

Web API

Not Applicable

Token cache serialization

Not Applicable

Description

A bug introduced in 3.1.0 is during splitting of the authority.
The condition will always be true here

This was originally brought up by @yzhoholiev in another issue but isn't relevant to the original post so creating this to track it.

Reproduction steps

Use a config that needs authority parsing

Error message

No response

Id Web logs

No response

Relevant code snippets

N/A

Regression

No response

Expected behavior

This condition should actually switch on the presence of tenantId/instance rather than be always true