Remove non-existing algorithm path for constant resolution #2158
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Motivation
In #2136, we actually made a mistake. Ruby does not treat qualified or unqualified constant references differently, that was a misunderstanding.
The algorithm is the same for both and will always favour enclosing lexical scopes above inheritance.
Implementation
Removed the entire path algorithm path for qualified references and kept only the one implementation, which handles all cases.
Automated Tests
Added a test that catches the mistake in the implementation.