[K/N][Tests] Migrate framework and objcexport tests

^KT-61259

native/native.tests/testData/framework/objcexport/sealedClass.swift

@@ -0,0 +1,25 @@
+import Kt
+
+private func test1() throws {
+    let user = Person.User(id: 1)
+    let employee = Person.WorkerEmployee(id: 2)
+    let contractor = Person.WorkerContractor(id: 3)
+    let userAsPerson: Person = user
+    let employeeAsWorker: Person.Worker = employee
+    let contractorAsWorker: Person.Worker = contractor
+
+    try assertEquals(actual: user.id, expected: 1)
+    try assertEquals(actual: (userAsPerson as! Person.User).id, expected: 1)
+    try assertEquals(actual: employee.id, expected: 2)
+    try assertEquals(actual: (employeeAsWorker as! Person.WorkerEmployee).id, expected: 2)
+    try assertEquals(actual: contractor.id, expected: 3)
+    try assertEquals(actual: (contractorAsWorker as! Person.WorkerContractor).id, expected: 3)
+}
+
+class SealedClassTests : SimpleTestProvider {
+    override init() {
+        super.init()
+
+        test("Test1", test1)
+    }
+}