chore: add support for ora mfe url

[leangseu-edx]

TL;DR - add ORA_MICROFRONTEND_URL support

https://2u-internal.atlassian.net/browse/AU-1571

NOTE: this pr will be merge after along with openedx/edx-platform#33809

What changed?

• the setting will be set on edx-platform env

Developer Checklist

• Reviewed the release process
• Translations and JS/SASS compiled
• Bumped version number in openassessment/__init__.py and package.json

Reviewer Checklist

Collectively, these should be completed by reviewers of this PR:

• I've done a visual code review
• I've tested the new functionality

FYI: @openedx/content-aurora

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8040408) 95.01% compared to head (11daa5c) 95.01%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2126   +/-   ##
=======================================
  Coverage   95.01%   95.01%           
=======================================
  Files         191      191           
  Lines       20537    20537           
  Branches     1860     1860           
=======================================
  Hits        19513    19513           
  Misses        767      767           
  Partials      257      257           

Flag	Coverage Δ
unittests	95.01% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.