fix: Exclude the win32 IP address control from the SiblingUniqueAndFo…

…cusable rule (#1038)

The Win32 IP address control consists of a pane of edit fields, one per
octet of an IPV4 address. As such, the `SiblingUniqueAndFocusable` rule
is not appropriate for this control.

src/Rules/Library/SiblingUniqueAndFocusable.cs

@@ -63,7 +63,12 @@ protected override Condition CreateCondition()
                 & WPF
                 & NoChild(Custom | Name.NullOrEmpty);
 
-            return EligibleChild & NotParent(wpfDataItem);
+            var ipAddressControl = Win32Framework & ClassName.Is("SysIPAddress32");
+
+            return EligibleChild
+                & NotParent(wpfDataItem)
+                // microsoft/accessibility-insights-windows#1838: The Win32 IP address control yields false positives for this rule.
+                & NotParent(ipAddressControl);
         }
     } // class
 } // namespace