(GH-10505) Add note on property name ordering (#10507)

Prior to this change, the "Enumerating property names" section
in _Everything you wanted to know about PSCustomObject_ didn't
clarify that the results from using `Get-Member` and the
member-access operator to enumerate property names differs.

`Get-Member` returns the properties in alphabetical order while
member-access returns them in the order they were defined on the
object.

This change:

- adds a note to clarify this difference.
- Resolves #10505
- Fixes AB#169145

reference/docs-conceptual/learn/deep-dives/everything-about-pscustomobject.md

@@ -1,7 +1,7 @@
 ---
 description: PSCustomObject is a simple way to create structured data.
 ms.custom: contributor-KevinMarquette
-ms.date: 06/07/2023
+ms.date: 10/11/2023
 title: Everything you wanted to know about PSCustomObject
 ---
 # Everything you wanted to know about PSCustomObject
@@ -129,6 +129,10 @@ We can get this same list off of the `psobject` property too.
 $myobject.psobject.properties.name
 ```
 
+> [!NOTE]
+> `Get-Member` returns the properties in alphabetical order. Using the member-access operator to
+> enumerate the property names returns the properties in the order they were defined on the object.
+
 ### Dynamically accessing properties
 
 I already mentioned that you can access property values directly.