[FIR2IR] Generate IR declarations in classes in strict order

Order is following:
- declared declarations in declaration (in source) order
- generated declarations in sorted order

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirLightTreeJsIrTextTestGenerated.java

@@ -88,6 +88,12 @@ public class FirLightTreeJsIrTextTestGenerated extends AbstractFirLightTreeJsIrT
             runTest("compiler/testData/ir/irText/classes/companionObject.kt");
         }
 
+        @Test
+        @TestMetadata("declarationOrder.kt")
+        public void testDeclarationOrder() throws Exception {
+            runTest("compiler/testData/ir/irText/classes/declarationOrder.kt");
+        }
+
         @Test
         @TestMetadata("delegatedGenericImplementation.kt")
         public void testDelegatedGenericImplementation() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirPsiJsIrTextTestGenerated.java

@@ -88,6 +88,12 @@ public class FirPsiJsIrTextTestGenerated extends AbstractFirPsiJsIrTextTest {
             runTest("compiler/testData/ir/irText/classes/companionObject.kt");
         }
 
+        @Test
+        @TestMetadata("declarationOrder.kt")
+        public void testDeclarationOrder() throws Exception {
+            runTest("compiler/testData/ir/irText/classes/declarationOrder.kt");
+        }
+
         @Test
         @TestMetadata("delegatedGenericImplementation.kt")
         public void testDelegatedGenericImplementation() throws Exception {

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/ClassicJsIrTextTestGenerated.java

@@ -88,6 +88,12 @@ public class ClassicJsIrTextTestGenerated extends AbstractClassicJsIrTextTest {
             runTest("compiler/testData/ir/irText/classes/companionObject.kt");
         }
 
+        @Test
+        @TestMetadata("declarationOrder.kt")
+        public void testDeclarationOrder() throws Exception {
+            runTest("compiler/testData/ir/irText/classes/declarationOrder.kt");
+        }
+
         @Test
         @TestMetadata("delegatedGenericImplementation.kt")
         public void testDelegatedGenericImplementation() throws Exception {