Update Ableton export builders and tests to handle new device properties (ReturnBranches, SendInfos)

tests/ableton-hybrid.test.ts

@@ -181,6 +181,8 @@ test('serializes every nested Live 10 Simpler as an identified list member', asy
 
     assert.ok(simplerTags.length > 0);
     assert.ok(simplerTags.every((tag) => /\sId="\d+"/.test(tag)));
+    assert.doesNotMatch(xml, /<ReturnBranch\s/);
+    assert.doesNotMatch(xml, /<AudioBranchSendInfo\s/);
   } finally {
     await server.close();
   }