fw/services/activity: use resource-id setter for insight tiny icon

AttributeIdIconTiny is a ResourceId-typed attribute, but the insight
notification builder added it with attribute_list_add_uint32, producing
the "Adding attribute with type uint32 for non-uint32_t attribute"
warning in field logs on every insight notification.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Signed-off-by: Joshua Jun <lets@throw.rocks>

Author: jplexer

src/fw/services/activity/activity_insights.c

@@ -322,7 +322,7 @@ static bool prv_save_state(ActivitySettingsKey key, void *val, size_t val_len) {
 static void prv_build_notification_attr_list(AttributeList *attr_list, const char *body,
                                              uint32_t icon, ActivityInsightType insight_type,
                                              ActivitySessionType activity_type) {
-  attribute_list_add_uint32(attr_list, AttributeIdIconTiny, icon);
+  attribute_list_add_resource_id(attr_list, AttributeIdIconTiny, icon);
   attribute_list_add_cstring(attr_list, AttributeIdBody, body);
   attribute_list_add_uint8(attr_list, AttributeIdBgColor, GColorOrangeARGB8);
   attribute_list_add_uint8(attr_list, AttributeIdHealthInsightType, insight_type);