REPL evaluation can't distinguish between multiple instances of the same REPL run config

[cursive-ghost]

If the user runs two instances of the same REPL run config, currently there's no good way to indicate which should be used to evaluate. There's really no way to distinguish this case, since REPLs are identified in config only by the name. If multiple copies are running, they should have an index (e.g. (1), (2)) in their REPL tab name, and when evaluating a popup should be shown so the user can choose.