fix(sensors): Only accept data once per behavior.

* Don't accept data for the same behavior on multiple layers more than
  once, to avoid duplicate/extraneous triggers.

app/src/keymap.c

@@ -257,7 +257,11 @@ int zmk_keymap_sensor_event(uint8_t sensor_index,
                             size_t channel_data_size, int64_t timestamp) {
     bool opaque_response = false;
 
+    const struct device *accepted_devices[ZMK_KEYMAP_LAYERS_LEN] = {};
+    uint8_t accepted_devices_count = 0;
+
     for (int layer = ZMK_KEYMAP_LAYERS_LEN - 1; layer >= 0; layer--) {
+        int ret;
         struct zmk_behavior_binding *binding = &zmk_sensor_keymap[layer][sensor_index];
 
         LOG_DBG("layer: %d sensor_index: %d, binding name: %s", layer, sensor_index,
@@ -275,9 +279,21 @@ int zmk_keymap_sensor_event(uint8_t sensor_index,
             .timestamp = timestamp,
         };
 
-        int ret = behavior_sensor_keymap_binding_accept_data(
-            binding, event, zmk_sensors_get_config_at_index(sensor_index), channel_data_size,
-            channel_data);
+        bool already_accepted = false;
+        for (int j = 0; j < accepted_devices_count; j++) {
+            if (behavior == accepted_devices[j]) {
+                already_accepted = true;
+                break;
+            }
+        }
+
+        if (!already_accepted) {
+            ret = behavior_sensor_keymap_binding_accept_data(
+                binding, event, zmk_sensors_get_config_at_index(sensor_index), channel_data_size,
+                channel_data);
+
+            accepted_devices[accepted_devices_count++] = behavior;
+        }
 
         if (ret < 0) {
             LOG_WRN("behavior data accept for behavior %s returned an error (%d). Processing to "