Report release multistate value directly before not_pressed overwrite

On end-of-hold the switch cluster writes the *_release presentValue
(6=single_release, 9=double_release, ...) and immediately overwrites it
with not_pressed (0) in the same call, with no event-loop yield in
between. The SDK's deferred reporting machinery reads the live attribute
when it next runs, so it only ever sees the final 0: the release value
never reaches the network, and coordinators never observe
single_release/double_release actions.

Send the report directly via hal_zigbee_send_report_attr while the
attribute still holds the release value. The existing
notify_attribute_changed call is kept so the SDK reporting bookkeeping
is unchanged; the added direct send bypasses the deferred path entirely,
so the fix holds regardless of SDK reporting internals on both the
telink and silabs ports.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: neneonline

src/zigbee/switch_cluster.c

@@ -495,6 +495,17 @@ void switch_cluster_on_button_release(zigbee_switch_cluster *cluster) {
         hal_zigbee_notify_attribute_changed(cluster->endpoint,
                                             ZCL_CLUSTER_MULTISTATE_INPUT_BASIC,
                                             ZCL_ATTR_MULTISTATE_INPUT_PRESENT_VALUE);
+        // The release value is transient: it is overwritten with
+        // MULTISTATE_NOT_PRESSED below, in this same call, before the SDK's
+        // deferred reporting samples the attribute - so it never reaches the
+        // network on its own. Send the report directly while the attribute
+        // still holds the release value.
+        hal_zigbee_send_report_attr(cluster->endpoint,
+                                    ZCL_CLUSTER_MULTISTATE_INPUT_BASIC,
+                                    ZCL_ATTR_MULTISTATE_INPUT_PRESENT_VALUE,
+                                    ZCL_DATA_TYPE_UINT16,
+                                    &cluster->multistate_state,
+                                    sizeof(cluster->multistate_state));
         switch_cluster_level_stop(cluster);
         cluster->n_press = 0;
         cluster->in_hold = 0;