[openthread] Update config

Add `OPENTHREAD_CONFIG_MAC_CSL_TRANSMITTER_ENABLE`.

Bug: 424092850
Change-Id: I77f74a9e55caf516b64f183582ec12fe3d868da8
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/openthread/+/1315558
Reviewed-by: Prashanth Swaminathan <prashanthsw@google.com>
(cherry picked from commit c050c7a7c0e68dcd338bdaea70f04827405e18ae)

include/openthread-config-fuchsia.h

diff --git a/include/openthread-config-fuchsia.h b/include/openthread-config-fuchsia.h
index 3ef05cd..89cff4a 100644
--- a/include/openthread-config-fuchsia.h
+++ b/include/openthread-config-fuchsia.h
@@ -276,4 +276,12 @@
  *
  */
 #define OPENTHREAD_CONFIG_LINK_METRICS_MANAGER_ENABLE 1
+
+/**
+ * @def OPENTHREAD_CONFIG_LINK_METRICS_MANAGER_ENABLE
+ *
+ * Define to 1 to enable MAC CSL Transimtter
+ *
+ */
+#define OPENTHREAD_CONFIG_MAC_CSL_TRANSMITTER_ENABLE 1
 #endif // THIRD_PARTY_OPENTHREAD_INCLUDE_OPENTHREAD_CONFIG_FUCHSIA_H_