Implementors search in the Debugger interprets selector as a variable

[pavel-krivanek]

Bug description Pressing Ctrl-M for implementors search in the Debugger probably tries to work with the selector as if it would be a variable and thus shows UndefinedObject class.

To Reproduce Steps to reproduce the behavior:

1. in a Playground, type Integer maxValue and try to print it (it is wrong expression)
2. The Debugger opens (Instance of Integer class did not understand #maxValue)
3. select maxValue selector
4. press Ctrl+M (or a platform alternative)
5. a browser on UndefinedObject is opened

Version information:

• Version: Pharo 10 and 11 but worked correcty in Pharo 9