JVM_IR: refactor MoveCompanionObjectFieldsLowering

* Extract replacement of IrGetField/IrSetField into a separate
   file-level lowering (should reduce the amount of work to linear in
   the number of classes rather than potentially quadratic)

 * Extract static backing field construction into JvmDeclarationFactory
   and move that lowering after PropertiesToFields lowering to reduce
   code duplication

compiler/tests/org/jetbrains/kotlin/codegen/BlackBoxCodegenTestGenerated.java

@@ -15058,6 +15058,16 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/jvmField/constructorProperty.kt");
         }
 
+        @TestMetadata("fileOrder.kt")
+        public void testFileOrder() throws Exception {
+            runTest("compiler/testData/codegen/box/jvmField/fileOrder.kt");
+        }
+
+        @TestMetadata("fileOrderWithCopying.kt")
+        public void testFileOrderWithCopying() throws Exception {
+            runTest("compiler/testData/codegen/box/jvmField/fileOrderWithCopying.kt");
+        }
+
         @TestMetadata("initializersOrder.kt")
         public void testInitializersOrder() throws Exception {
             runTest("compiler/testData/codegen/box/jvmField/initializersOrder.kt");