Avoid infinite recursion when looking for suggestions

Co-authored-by: Ondřej Lhoták <[email protected]>
Co-authored-by: Nguyen Pham <[email protected]>

Author: 3 people

compiler/src/dotty/tools/dotc/typer/ImportSuggestions.scala

@@ -97,6 +97,7 @@ trait ImportSuggestions:
           if refSym.is(JavaDefined) then Nil
           else nestedRoots(site)
       nested
+        .filter(mbr => mbr.asTerm != ref.termSymbol)
         .map(mbr => TermRef(ref, mbr.asTerm))
         .flatMap(rootsIn)
         .toList