Guided Rule Editor: Change behavior of "copy rule" functionality

When copying a guided rule, after entering the name of the new rule, the editor still shows the "base" rule which was used as the basis for the copy. The "Guided Rules (with DSL)" part of the Project Explorer reloads, closing the previously unfolded "Guided Rules (with DSL)" tree. The user must then first open that tree again, scroll down to the newly created rule and then click on it to open it.

It would be nice if the newly created copy could be opened immediately after creating it, so the user won't have to explicitly open the new rule.