Link Preview in administration not working correctly with HTTPS

[stellainformatica]

Steps to reproduce the issue

In "Global Configuration" set the parameter "Force SSL" -> "None" or "Administrator Only".
Use the control panel of Joomla 3 with HTTPS
Click on the link "Preview" at the top right in the Joomla 3.

Expected result

Opens the frontend site in HTTP.

Actual result

Opens the frontend site in HTTPS and not in HTTP.

[AlexRed]

@test
Confirm the problem.

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/8109.}

[brianteeman]

Closed as we have a PR for testing #9712

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_{This comment was created with the J!Tracker Application at issues.joomla.org/joomla-cms/8109.}