[Build]Fix building on Visual Studio 17.8 (#29303)

* Add definition to ignore deprecated stdext checked_array_iterator

* Disable warning to ignore direct mention of dll in C# headers

* Fix PowerAccent Keyboard Service build errors

* Remove unused event variables

* Fix uninitialized events

* Remove unused telemetry events

* Fix building ShortcutGuide

* Fix C-style casts

* Fix spellcheck

src/modules/poweraccent/PowerAccentKeyboardService/KeyboardListener.h

@@ -3,6 +3,7 @@
 #include "KeyboardListener.g.h"
 
 #include <spdlog/stopwatch.h>
+#include <mutex>
 
 namespace winrt::PowerToys::PowerAccentKeyboardService::implementation
 {