RM_PROCESS_INFO::TSSessionId is unsigned but RM_INVALID_TS_SESSION is signed

RM_INVALID_TS_SESSION is intended to be compared to RM_PROCESS_INFO::TSSessionId but they have different types; one is signed and the other is unsigned. That then requires an `unchecked` cast when these are compared in C#.

Can the same type be used for both? I guess it would have to be the unsigned type, for consistency with WTS_CURRENT_SESSION, WTSQuerySessionInformationW, and others.

Start with generation/WinSDK/RecompiledIdlHeaders/um/RestartManager.h at the referenced declarations for RM_INVALID_TS_SESSION and RM_PROCESS_INFO::TSSessionId. Compare their types with WTS_CURRENT_SESSION and WTSQuerySessionInformationW, then verify that the declarations use a consistent type and no unchecked cast is required by the corresponding C# projection.

Written by the indexing model from the issue text.