Capture `ExpandoObject` as dictionaries/structures

When logging an object that has a property of type Dictionary using @ then it's shown as expected in Seq like:

{
  DictionaryObj: {
    'ItemA': 100,
    'ItemB': 200,
  }
}

But when logging the dictionary object directly, it shows as a list of KeyValuePairs like:

[ItemA, 100], [ItemB, 200]

It is not consistent in how a Dictionary object is displayed and I highly prefer it to show as an object than a list, as in:

{
  'ItemA': 100,
  'ItemB': 200,
}

Update: dynamic objects which are dictionaries underneath already log as expected as objects. ExpandoObjects also need to be fixed to log as objects.

No file, test, or entry point is named. Inspect the handling of ExpandoObject and compare it with the existing dynamic-dictionary path; done means an ExpandoObject logs as an object with named properties rather than a list of key-value pairs, without regressing current dictionary logging.