Record special descriptor in REFERENCE_TARGET for type alias object

If a type alias is used to reference an object (companion object) as a
qualifier, record FakeCallableDescriptorForTypeAliasObject in
REFERENCE_TARGET. This tells IDE that type alias was used in the file,
thus, if it's imported, such import isn't redundant.
REFERENCE_TARGET is used mostly by IDE and by ClassifierUsageChecker,
which we also have to update to handle qualifiers with
FakeCallableDescriptorForTypeAliasObject in REFERENCE_TARGET.

Rewrite some parts of ClassifierUsageChecker for cleaner interaction.

 #KT-21863 Fixed Target versions 1.2.40

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

@@ -0,0 +1,18 @@
+// FILE: 1.kt
+package something
+
+object N
+
+class WC {
+    companion object
+}
+
+typealias T = N
+typealias TWC = WC
+
+// FILE: 2.kt
+import something.T
+import something.TWC
+
+val test1 = T.hashCode()
+val test2 = TWC.hashCode()

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

@@ -0,0 +1,30 @@
+package
+
+public val test1: kotlin.Int
+public val test2: kotlin.Int
+
+package something {
+
+    public object N {
+        private constructor N()
+        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 class WC {
+        public constructor WC()
+        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 companion object Companion {
+            private constructor Companion()
+            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 T = something.N
+    public typealias TWC = something.WC
+}