unused class when used through import only should not be treated as used (IDEA-99444)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/advHighlighting6/InnerClassImportShouldNotLeadToClassUsage.java

@@ -0,0 +1,8 @@
+package p;
+
+import static p.Outer.Inner;
+import java.util.*;
+
+abstract class <warning descr="Class 'Outer' is never used">Outer</warning> implements List<Inner> {
+  public static class Inner {} 
+}