[Backport 4.2.x] [Fixes #12170] Unable to set advanced contact roles in metadata editor

[giohappy]

Checklist

Reviewing is a process done by project maintainers, mostly on a volunteer basis. We try to keep the overhead as small as possible and appreciate if you help us to do so by completing the following items. Feel free to ask in a comment if you have troubles with any of them.

For all pull requests:

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The following are required only for core and extension modules (they are welcomed, but not required, for contrib modules):

• There is a ticket in https://github.com/GeoNode/geonode/issues describing the issue/improvement/feature (a notable exemption is, changes not visible to end-users)
• The issue connected to the PR must have Labels and Milestone assigned
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• Commit message must be in the form "[Fixes #<issue_number>] Title of the Issue"
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Submitting the PR does not require you to check all items, but by the time it gets merged, they should be either satisfied or inapplicable.

[cla-bot]

Thank you for your pull request and welcome to our community. We could not parse the GitHub identity of the following contributors: Marcel Wallschlaeger.
This is most likely caused by a git client misconfiguration; please make sure to:

1. check if your git client is configured with an email to sign commits git config --list | grep email
2. If not, set it up using git config --global user.email email@example.com
3. Make sure that the git commit email is configured in your GitHub account settings, see https://github.com/settings/emails

[cla-bot]

Thank you for your pull request and welcome to our community. We could not parse the GitHub identity of the following contributors: Marcel Wallschlaeger.
This is most likely caused by a git client misconfiguration; please make sure to:

1. check if your git client is configured with an email to sign commits git config --list | grep email
2. If not, set it up using git config --global user.email email@example.com
3. Make sure that the git commit email is configured in your GitHub account settings, see https://github.com/settings/emails

[codecov]

Codecov Report

Attention: Patch coverage is 90.00000% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 63.18%. Comparing base (567191c) to head (be095b7).

Additional details and impacted files

@@           Coverage Diff           @@
##            4.2.x   #12207   +/-   ##
=======================================
  Coverage   63.17%   63.18%           
=======================================
  Files         877      877           
  Lines       52551    52551           
  Branches     6596     6597    +1     
=======================================
+ Hits        33200    33202    +2     
+ Misses      17828    17827    -1     
+ Partials     1523     1522    -1     

[giohappy]

Thanks @mwallschlaeger for your contribution.