[FIR] Save declarations in metadata in source order

^KT-54792 Fixed
^KT-54801
^KT-54800

compiler/testData/serialization/builtinsSerializer/propertiesOrder.kt

@@ -0,0 +1,11 @@
+package test
+
+class Some(
+    val c: Int,
+    val b: Int,
+    val a: Int,
+) {
+    val z = 1
+    val y = 2
+    val x = 3
+}