Preserve record order in retained lowering

tests/corpus/2691-retained-lowering-record-order.ts

@@ -0,0 +1,11 @@
+// Retained reachability lowers module inits before the function bodies they
+// discover. Record metadata must still use the historical emit order: this
+// function's {a,b} shape precedes the init's structurally-equal {b,a} shape.
+function printFunctionRecord(): void {
+  const value = { a: 1, b: 2 };
+  console.log(Object.keys(value).join(","));
+  console.log(JSON.stringify(value));
+}
+
+printFunctionRecord();
+console.log(Object.keys({ b: 2, a: 1 }).length);