Add third category and WCF Client area (#33001)

.github/ISSUE_TEMPLATE/breaking-change.yml

@@ -47,10 +47,11 @@ body:
     id: change-type
     attributes:
       label: Type of breaking change
-      description: This information will be used to label the issue appropriately.
+      description: This information will be used to label the issue appropriately. [(How do I decide?)](https://learn.microsoft.com/dotnet/core/compatibility/categories)
       options:
-        - label: "**Binary incompatible**: Existing binaries may encounter a breaking change in behavior, such as failure to load/execute or different run-time behavior."
-        - label:  "**Source incompatible**: Source code may encounter a breaking change in behavior when targeting the new runtime/component/SDK, such as compile errors or different run-time behavior."
+        - label: "**Binary incompatible**: Existing binaries may encounter a breaking change in behavior, such as failure to load or execute, and if so, require recompilation."
+        - label:  "**Source incompatible**: When recompiled using the new SDK or component or to target the new runtime, existing source code may require source changes to compile successfully."
+        - label:  "**Behavioral change**: Existing binaries may behave differently at run time."
   - type: textarea
     id: reason
     attributes:
@@ -90,6 +91,7 @@ body:
         - Security
         - Serialization
         - Visual Basic
+        - WCF Client
         - Windows Forms
         - Windows Presentation Foundation (WPF)
         - XML, XSLT