Add missing #include for components relying on transitive includes

sound_level and wireguard were getting automation.h transitively
through sensor/filter.h. Now that filter.h is conditionally compiled,
add the direct includes.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

esphome/components/sound_level/sound_level.h

@@ -6,6 +6,7 @@
 #include "esphome/components/microphone/microphone_source.h"
 #include "esphome/components/sensor/sensor.h"
 
+#include "esphome/core/automation.h"
 #include "esphome/core/component.h"
 #include "esphome/core/ring_buffer.h"
 

esphome/components/wireguard/wireguard.h

@@ -4,6 +4,7 @@
 #include <ctime>
 #include <initializer_list>
 
+#include "esphome/core/automation.h"
 #include "esphome/core/component.h"
 #include "esphome/core/helpers.h"
 #include "esphome/components/time/real_time_clock.h"