Redirect loop when accessing the site index page

[jonasraoni]

Describe the bug
After creating two contexts and accessing the main site page, a redirect loop happens.

Looks like an old bug that came to life after updates done at #10670

To Reproduce

1. Create two contexts
2. Access the site index

What application are you using?
OJS 3.5/main

[Tribunal33]

Adding some details @jonasraoni
I am not clear on how a typical user would access this page? Do you know how to access this without changing the URL?

Prereqs : You will need to have at least 2 contexts (Journals, press or server). Although a single journal can see the redirect for the route but it does correctly land on a page.

Steps

1. Open the dev tools network tab if you want to watch all the redirect attempts
2. Go to this route : /index.php/index

Expected: It shoud list out all of the contexts (aka Journals) - Example : https://ojs34.demo.publicknowledgeproject.org/index.php/index/
Actual: There is a redirect loop and eventually an error page

When trying this on a 3.4 page there are no redirects and it boots up with 200 status

[Tribunal33]

Passes QA on OJS/OMP 3.5. I added some testing around home page (site-wide context) in my QA documents space to cover these base route bugs. I'm now seeing a listing of the journals when more than one journal is created.