PSI2IR KT-41284 use getters for open data class property values

'allopen' compiler plug-in can make data classes and their members open,
which is a compilation error in usual case, but makes sense for Spring
and other frameworks that generate proxy-classes.

compiler/tests-gen/org/jetbrains/kotlin/codegen/BytecodeTextTestGenerated.java

@@ -4282,6 +4282,16 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
             KotlinTestUtils.assertAllTestsPresentByMetadataWithExcluded(this.getClass(), new File("compiler/testData/codegen/bytecodeText/properties"), Pattern.compile("^(.+)\\.kt$"), null, TargetBackend.JVM, true);
         }
 
+        @TestMetadata("dataClass.kt")
+        public void testDataClass() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/properties/dataClass.kt");
+        }
+
+        @TestMetadata("openDataClass.kt")
+        public void testOpenDataClass() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/properties/openDataClass.kt");
+        }
+
         @TestMetadata("compiler/testData/codegen/bytecodeText/properties/lateinit")
         @TestDataPath("$PROJECT_ROOT")
         @RunWith(JUnit3RunnerWithInners.class)