Added error when Enum member initaliser references itself (#34655)

Fixes #34606

src/compiler/checker.ts

@@ -33764,6 +33764,9 @@ namespace ts {
                         error(expr, Diagnostics.A_member_initializer_in_a_enum_declaration_cannot_reference_members_declared_after_it_including_members_defined_in_other_enums);
                         return 0;
                     }
+                    else {
+                        error(expr, Diagnostics.Property_0_is_used_before_being_assigned, symbolToString(memberSymbol));
+                    }
                 }
                 return undefined;
             }