Remove usage of retrievecontentpack --foreground

[benjaoming]

Summary

Followup to #5578

TODO

• Has documentation been written/updated?
• Have you written release notes for the upcoming release?

Reviewer guidance

n/a

Issues addressed

#5578

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (0.17.x@ed4824b). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             0.17.x    #5579   +/-   ##
=========================================
  Coverage          ?   66.04%           
=========================================
  Files             ?      113           
  Lines             ?     6508           
  Branches          ?        0           
=========================================
  Hits              ?     4298           
  Misses            ?     2210           
  Partials          ?        0

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