fix: #6334 updating requestgroup caused render error

[filfreire]

changelog(Fixes): Fixed issue #6334 where a error was thrown when updating a Request Folder via its Settings.

Closes #6334

The way we were calling update request group (e.g. when renaming or moving a request folder, or changing its description) wasn't properly setup. This PR fixed that. Also added a test.

• when moving a request group to another workspace, we need to either redraw the current workspace view or open the other workspace view, otherwise we still see the moved request on the sidebar

Pending problems

• there's another bug when picking different options of the workspaces to move/copy to on the request - fixed in fix: render fail on workspace dropdown in req group settings #6350

[jackkav]

We need to standardise on a update request convention. Thanks for the fix