[safe_mode] Mark SafeModeComponent and SafeModeTrigger as final (#14282)

esphome/components/safe_mode/automation.h

@@ -8,7 +8,7 @@
 
 namespace esphome::safe_mode {
 
-class SafeModeTrigger : public Trigger<> {
+class SafeModeTrigger final : public Trigger<> {
  public:
   explicit SafeModeTrigger(SafeModeComponent *parent) {
     parent->add_on_safe_mode_callback([this]() { trigger(); });

esphome/components/safe_mode/safe_mode.h

@@ -15,7 +15,7 @@ namespace esphome::safe_mode {
 constexpr uint32_t RTC_KEY = 233825507UL;
 
 /// SafeModeComponent provides a safe way to recover from repeated boot failures
-class SafeModeComponent : public Component {
+class SafeModeComponent final : public Component {
  public:
   bool should_enter_safe_mode(uint8_t num_attempts, uint32_t enable_time, uint32_t boot_is_good_after);