Allowing chip-repl test to send invalid enum values

src/app/zap-templates/templates/app/cluster-enums.zapt

@@ -24,6 +24,10 @@ enum class {{asType label}} : {{asUnderlyingZclType name}} {
 {{#zcl_enum_items}}
 k{{asUpperCamelCase label}} = {{asHex value 2}},
 {{/zcl_enum_items}}
+// All received enum values that are not listed above will be mapped
+// to kUnknownEnumValue. This is a helper enum value that should only
+// be used by code to process how it handles receiving and unknown
+// enum value. This specific should never be transmitted.
 kUnknownEnumValue = {{first_unused_enum_value mode="first_unused"}},
 };
 {{#if (isWeaklyTypedEnum label)}}

src/controller/python/BUILD.gn

@@ -198,6 +198,7 @@ chip_python_wheel_action("chip-core") {
         "chip/ChipCommissionableNodeCtrl.py",
         "chip/ChipCoreBluetoothMgr.py",
         "chip/ChipStack.py",
+        "chip/enum.py",
         "chip/FabricAdmin.py",
         "chip/__init__.py",
         "chip/ble/__init__.py",