fix: internal routing ignores public path

[dyudyunov]

Description

Internal routes don't respect the PUBLIC_PATH which leads to redirecting to incorrect URLs.

Add a new util function for constructing the correct internal route URL.

Steps to reproduce

You'll need an instance deployed with the common domain for MFEs (each MFE should have the PUBLIC_PATH set).
You can reproduce it using Tutor.
Devstack uses separate domains for each MFE so you won't reproduce the issue there!

1. Set up a program
2. Go to Profile and click on "View My Records" button
   
3. Click on "View Program Record" button
   

Actual result

PUBLIC_PATH for Learner Record MFE is ignored, and the user is redirected to the wrong URL

The same result on the Program Records page for the "Back To My Records" link

Expected result

Correct internal routing is performed

Notes

I'll create a backport PR for Quince soon

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.73%. Comparing base (9efeceb) to head (10c950f).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #312      +/-   ##
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+ Coverage   70.22%   70.73%   +0.50%     
==========================================
  Files          27       28       +1     
  Lines         403      410       +7     
  Branches       85       87       +2     
==========================================
+ Hits          283      290       +7     
  Misses        119      119              
  Partials        1        1              

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[justinhynes]

@dyudyunov -- thanks for calling out that this can't be reproduced in devstack 😅. I was sitting wracking my brain trying to figure out how we could have missed this, but we have missed all of Tutor thus far 😬.

[dyudyunov]

@justinhynes I would also mention that a similar fix is present in the Course Authoring MFE (both master and quince.master branches)

It could be helpful to move the createCorrectInternalRoute helper function to the common dependency such as frontend-platform in the future to get rid of duplicated functionality.

@ihor-romaniuk FYI

[dyudyunov]

@justinhynes @mphilbrick211 It would be really great to have these changes in open-release/quince.3 🙏

I've created a backport PR: #313