fix: Fix content overflow in the Pages & Resources modal windows

[Lunyachek]

Description

This fix is similar to the adjacent fix - #1291, but now applied to modals on the Pages and Resources page

Before

2024-09-19.16.04.02.mov

2024-09-19.16.04.54.mov

After

2024-09-19.16.07.33.mov

[openedx-webhooks]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.47%. Comparing base (053a9b1) to head (d4e81dc).
Report is 2 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1301   +/-   ##
=======================================
  Coverage   92.47%   92.47%           
=======================================
  Files        1025     1025           
  Lines       18976    18976           
  Branches     3977     3977           
=======================================
  Hits        17548    17548           
  Misses       1363     1363           
  Partials       65       65           

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