ntdll: Added side effect of KiUserCallbackDispatcher needed for SkyrimSE CreationKit

Push 0x7fff to the stack in __wine_syscall_dispatcher to recreate side effect of KiUserCallbackDispatcher needed by Skyrim Special Edition: Creation Kit to fix a menu resolution bug.

Wine Bug: https://bugs.winehq.org/show_bug.cgi?id=58003

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