fix: Fixed the display of the selection of available time zones (for Palm)

[DmytroAlipov]

Backport from the master.

Description

An error was found when selecting a timezone in the user account.

In this PR, a time zone selection was added.
Then the select field was rewritten in PR. (Paragon form component deprecations)
However, these changes have broken the time zone selection field.

Before:

After:

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[codecov]

Codecov Report

All modified lines are covered by tests ✅

❗ No coverage uploaded for pull request base (open-release/palm.master@03e3b67). Click here to learn what that means.

Additional details and impacted files

@@                     Coverage Diff                     @@
##             open-release/palm.master     #895   +/-   ##
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  Coverage                            ?   38.76%           
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  Files                               ?      110           
  Lines                               ?     2291           
  Branches                            ?      625           
===========================================================
  Hits                                ?      888           
  Misses                              ?     1318           
  Partials                            ?       85           

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[mphilbrick211]

Hi @abdullahwaheed and @Mashal-m! Would one of you be able to merge this for us? The master has been merged. Thanks!

[mphilbrick211]

Hi @openedx/2u-aperture! Would someone be able to please merge this for us? Thanks!

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