Release Candidate Bug Fixes and Improvements (#1121)

* Notification: use all input for backlight, otherwise it is causing issues on repeat. Dolphin: rework debug tools.

* Notification: remove unused variable

* Applications: fix incorrect count in system apps list

* SubGhz: fix memory leak in settings

* SubGhz: fix incorrect frequency in newly created keys

* Loader: make cli command parallel safe

applications/notification/notification_app.c

@@ -418,11 +418,8 @@ static bool notification_save_settings(NotificationApp* app) {
 static void input_event_callback(const void* value, void* context) {
     furi_assert(value);
     furi_assert(context);
-    const InputEvent* event = value;
     NotificationApp* app = context;
-    if(event->type == InputTypePress) {
-        notification_message(app, &sequence_display_on);
-    }
+    notification_message(app, &sequence_display_on);
 }
 
 // App alloc