KT-14641: Nested type alias reference via an instance is an error.

compiler/testData/diagnostics/tests/typealias/kt14641.kt

@@ -0,0 +1,9 @@
+class A {
+    public inner class B { }
+    public typealias BAlias = B
+}
+
+fun f() {
+    val a = A()
+    a.<!NO_COMPANION_OBJECT, NESTED_CLASS_ACCESSED_VIA_INSTANCE_REFERENCE!>BAlias<!>
+}

compiler/testData/diagnostics/tests/typealias/kt14641.txt

@@ -0,0 +1,18 @@
+package
+
+public fun f(): kotlin.Unit
+
+public final class A {
+    public constructor 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
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+
+    public final inner class B {
+        public constructor B()
+        public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+        public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+        public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+    }
+    public typealias BAlias = A.B
+}