Clipboard functionality does not work as expected

[vania-pooh]

When utilizing the endpoint https://moon.example.com/wd/hub/session/firefox-95-0-f2bcd32b-d932-4cdc-a639-687ab8e4f840/aerokube/clipboard without a previously set value, the request returns a 500 Server Error: Internal Server Error' instead of an empty/null/None value.

Previously, in version 2.3.5, the same scenario resulted in a {'value': null} response, which was the expected behavior.