Package vs class conflict in qualifier resolution:

- add test for unresolved 'a.a' after 'import a.a';
- added TODO in copy-paste test for 'a.a'

compiler/testData/diagnostics/tests/qualifiedExpression/PackageVsClass2.kt

@@ -1,7 +1,12 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
 // MODULE: m1
 // FILE: a.kt
 package a
 
+class a {
+    companion object {}
+}
+
 class b {
     fun a_b() {}
 }
@@ -12,4 +17,17 @@ package test
 
 class a
 
-val x = a.<!UNRESOLVED_REFERENCE!>b<!>()
+val x = a.<!UNRESOLVED_REFERENCE!>b<!>()
+
+// MODULE: m3(m1)
+// FILE: c.kt
+package test
+
+import a.a
+
+fun foo(i: a) {
+    a
+    a()
+    a.<!UNRESOLVED_REFERENCE!>a<!>
+    a.<!UNRESOLVED_REFERENCE!>a<!>()
+}