[FIR] Fix type alias handling in qualifier position

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/FirCallResolver.kt

@@ -208,7 +208,7 @@ class FirCallResolver(
                 val classId = referencedSymbol.classId
                 return FirResolvedQualifierImpl(nameReference.source, classId.packageFqName, classId.relativeClassName).apply {
                     resultType = if (classId.isLocal) {
-                        typeForQualifierByDeclaration(referencedSymbol.fir, resultType)
+                        typeForQualifierByDeclaration(referencedSymbol.fir, resultType, session)
                             ?: resultType.resolvedTypeFromPrototype(
                                 session.builtinTypes.unitType.type//StandardClassIds.Unit(symbolProvider).constructType(emptyArray(), isNullable = false)
                             )

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/ResolveUtils.kt

@@ -320,7 +320,7 @@ fun BodyResolveComponents.typeForQualifier(resolvedQualifier: FirResolvedQualifi
         val classSymbol = symbolProvider.getClassLikeSymbolByFqName(classId)
             ?: return FirErrorTypeRefImpl(source = null, diagnostic = FirSimpleDiagnostic("No type for qualifier", DiagnosticKind.Other))
         val declaration = classSymbol.phasedFir
-        typeForQualifierByDeclaration(declaration, resultType)?.let { return it }
+        typeForQualifierByDeclaration(declaration, resultType, session)?.let { return it }
     }
     // TODO: Handle no value type here
     return resultType.resolvedTypeFromPrototype(
@@ -334,7 +334,11 @@ internal fun typeForReifiedParameterReference(parameterReference: FirResolvedRei
     return resultType.resolvedTypeFromPrototype(typeParameterSymbol.constructType(emptyArray(), false))
 }
 
-internal fun typeForQualifierByDeclaration(declaration: FirDeclaration, resultType: FirTypeRef): FirTypeRef? {
+internal fun typeForQualifierByDeclaration(declaration: FirDeclaration, resultType: FirTypeRef, session: FirSession): FirTypeRef? {
+    if (declaration is FirTypeAlias) {
+        val expandedDeclaration = declaration.expandedConeType?.lookupTag?.toSymbol(session)?.fir ?: return null
+        return typeForQualifierByDeclaration(expandedDeclaration, resultType, session)
+    }
     if (declaration is FirRegularClass) {
         if (declaration.classKind == ClassKind.OBJECT) {
             return resultType.resolvedTypeFromPrototype(

compiler/testData/codegen/box/typealias/typeAliasCompanion.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class A {
     companion object {
         val result = "OK"

compiler/testData/diagnostics/tests/deprecated/typealiasCompanionObject.fir.kt

@@ -8,5 +8,5 @@ class Relevant {
 typealias Obsolete = Relevant
 
 fun test1() = Obsolete
-fun test2() = Obsolete.<!UNRESOLVED_REFERENCE!>value<!>
+fun test2() = Obsolete.value
 fun test3() = Obsolete.toString()

compiler/testData/diagnostics/tests/sourceCompatibility/apiVersion/typealiasesAsCompanionObjects.fir.kt

@@ -11,5 +11,5 @@ typealias CA = C
 
 val test1 = CA
 val test2 = CA.Companion
-val test3 = CA.<!UNRESOLVED_REFERENCE!>x<!>
+val test3 = CA.x
 val test4 = CA.Companion.x

compiler/testData/diagnostics/tests/typealias/genericTypeAliasObject.fir.kt

@@ -21,5 +21,5 @@ typealias TestGCWC<T> = GenericClassWithCompanion<T>
 
 val test25: GenericClassWithCompanion.Companion = TestGCWC
 val test26 = TestGCWC
-val test27: String = TestGCWC.<!UNRESOLVED_REFERENCE!>ok<!>
-val test28: String = TestGCWC.<!UNRESOLVED_REFERENCE!>foo<!>()
+val test27: String = TestGCWC.ok
+val test28: String = TestGCWC.foo()

compiler/testData/diagnostics/tests/typealias/typeAliasArgumentsInCompanionObject.fir.kt

@@ -6,5 +6,5 @@ class C<T1, T2> {
 
 typealias C2<T> = C<T, T>
 
-val test1: String = C2<String>.<!UNRESOLVED_REFERENCE!>OK<!>
-val test2: String = C2.<!UNRESOLVED_REFERENCE!>OK<!>
+val test1: String = C2<String>.OK
+val test2: String = C2.OK

compiler/testData/diagnostics/tests/typealias/typeAliasObject.fir.kt

@@ -28,5 +28,5 @@ typealias TestCWC = ClassWithCompanion
 
 val test35: ClassWithCompanion.Companion = TestCWC
 val test36 = TestCWC
-val test37: String = TestCWC.<!UNRESOLVED_REFERENCE!>ok<!>
-val test38: String = TestCWC.<!UNRESOLVED_REFERENCE!>foo<!>()
+val test37: String = TestCWC.ok
+val test38: String = TestCWC.foo()