Avoid full references search for languages without PsiClass (KT-14974)

Make smart type search work for Groovy.

 #KT-14974 Fixed

idea/testData/findUsages/java/findJavaMethodUsages/javaInvoke.0.kt

@@ -1,3 +1,7 @@
 fun f(c: JavaClass) {
     c()
+}
+
+fun foo(o: JavaClass.OtherJavaClass) {
+    o()
 }