FIR: use default getter in serializer if fir contains none

since we generate the default getter in this case in
Fir2IrDeclarationStorage.createIrProperty, so the serialized metadata
should follow the same behavior.
#KT-57373 fixed

kotlin-native/backend.native/tests/objcexport/expectedLazy.h

@@ -1294,6 +1294,27 @@ __attribute__((swift_name("Kt56521Kt")))
 @property (class) int32_t initialized __attribute__((swift_name("initialized")));
 @end
 
+__attribute__((swift_name("IKt57373")))
+@protocol KtIKt57373
+@required
+@property (readonly) int32_t bar __attribute__((swift_name("bar")));
+@end
+
+__attribute__((objc_subclassing_restricted))
+__attribute__((swift_name("DKt57373")))
+@interface KtDKt57373 : KtBase <KtIKt57373>
+- (instancetype)initWithFoo:(id<KtIKt57373>)foo __attribute__((swift_name("init(foo:)"))) __attribute__((objc_designated_initializer));
+@property (readonly) int32_t bar __attribute__((swift_name("bar")));
+@end
+
+__attribute__((objc_subclassing_restricted))
+__attribute__((swift_name("CKt57373")))
+@interface KtCKt57373 : KtBase <KtIKt57373>
+- (instancetype)init __attribute__((swift_name("init()"))) __attribute__((objc_designated_initializer));
++ (instancetype)new __attribute__((availability(swift, unavailable, message="use object initializers instead")));
+@property (readonly) int32_t bar __attribute__((swift_name("bar")));
+@end
+
 __attribute__((objc_subclassing_restricted))
 __attribute__((swift_name("LibraryKt")))
 @interface KtLibraryKt : KtBase

kotlin-native/backend.native/tests/objcexport/expectedLazyLegacySuspendUnit.h

@@ -1294,6 +1294,27 @@ __attribute__((swift_name("Kt56521Kt")))
 @property (class) int32_t initialized __attribute__((swift_name("initialized")));
 @end
 
+__attribute__((swift_name("IKt57373")))
+@protocol KtIKt57373
+@required
+@property (readonly) int32_t bar __attribute__((swift_name("bar")));
+@end
+
+__attribute__((objc_subclassing_restricted))
+__attribute__((swift_name("DKt57373")))
+@interface KtDKt57373 : KtBase <KtIKt57373>
+- (instancetype)initWithFoo:(id<KtIKt57373>)foo __attribute__((swift_name("init(foo:)"))) __attribute__((objc_designated_initializer));
+@property (readonly) int32_t bar __attribute__((swift_name("bar")));
+@end
+
+__attribute__((objc_subclassing_restricted))
+__attribute__((swift_name("CKt57373")))
+@interface KtCKt57373 : KtBase <KtIKt57373>
+- (instancetype)init __attribute__((swift_name("init()"))) __attribute__((objc_designated_initializer));
++ (instancetype)new __attribute__((availability(swift, unavailable, message="use object initializers instead")));
+@property (readonly) int32_t bar __attribute__((swift_name("bar")));
+@end
+
 __attribute__((objc_subclassing_restricted))
 __attribute__((swift_name("LibraryKt")))
 @interface KtLibraryKt : KtBase

kotlin-native/backend.native/tests/objcexport/expectedLazyNoGenerics.h

@@ -1294,6 +1294,27 @@ __attribute__((swift_name("Kt56521Kt")))
 @property (class) int32_t initialized __attribute__((swift_name("initialized")));
 @end
 
+__attribute__((swift_name("IKt57373")))
+@protocol KtIKt57373
+@required
+@property (readonly) int32_t bar __attribute__((swift_name("bar")));
+@end
+
+__attribute__((objc_subclassing_restricted))
+__attribute__((swift_name("DKt57373")))
+@interface KtDKt57373 : KtBase <KtIKt57373>
+- (instancetype)initWithFoo:(id<KtIKt57373>)foo __attribute__((swift_name("init(foo:)"))) __attribute__((objc_designated_initializer));
+@property (readonly) int32_t bar __attribute__((swift_name("bar")));
+@end
+
+__attribute__((objc_subclassing_restricted))
+__attribute__((swift_name("CKt57373")))
+@interface KtCKt57373 : KtBase <KtIKt57373>
+- (instancetype)init __attribute__((swift_name("init()"))) __attribute__((objc_designated_initializer));
++ (instancetype)new __attribute__((availability(swift, unavailable, message="use object initializers instead")));
+@property (readonly) int32_t bar __attribute__((swift_name("bar")));
+@end
+
 __attribute__((objc_subclassing_restricted))
 __attribute__((swift_name("LibraryKt")))
 @interface KtLibraryKt : KtBase

kotlin-native/backend.native/tests/objcexport/kt57373.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+interface IKt57373 {
+    val bar: Int
+}
+
+class DKt57373(foo: IKt57373) : IKt57373 by foo
+
+class CKt57373 : IKt57373 {
+    override val bar: Int = 42
+}

kotlin-native/backend.native/tests/objcexport/kt57373.swift

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+import Kt
+
+func testKt57373() throws {
+    let impl = CKt57373()
+    let x = DKt57373(foo: impl)
+    try assertEquals(actual: x.bar, expected: 42)
+}
+
+class Kt57373Tests : SimpleTestProvider {
+    override init() {
+        super.init()
+
+        test("testKt57373", testKt57373)
+    }
+}