Alias imports to hide symbols by original name from the current package too

compiler/testData/diagnostics/tests/imports/ImportFromCurrentWithDifferentName.kt

@@ -3,6 +3,6 @@ package a
 import a.A as ER
 
 interface A {
-    val a: A
+    val a: <!UNRESOLVED_REFERENCE!>A<!>
     val b: ER
 }

compiler/testData/diagnostics/tests/imports/ImportFromCurrentWithDifferentName.txt

@@ -3,7 +3,7 @@ package
 package a {
 
     public interface A {
-        public abstract val a: a.A
+        public abstract val a: [ERROR : A]
         public abstract val b: a.A
         public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
         public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int