Kernel: Add header includes closer to their use

Author: https://github.com/jamesmintram
Commit: 26d7c25076
Pull-request: https://github.com/SerenityOS/serenity/pull/10453
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/linusg ✅

Kernel/Thread.cpp

@@ -8,6 +8,7 @@
 #include <AK/Singleton.h>
 #include <AK/StringBuilder.h>
 #include <AK/Time.h>
+#include <Kernel/Arch/x86/InterruptDisabler.h>
 #include <Kernel/Arch/x86/SmapDisabler.h>
 #include <Kernel/Arch/x86/TrapFrame.h>
 #include <Kernel/Debug.h>