[0.4.9] Update Scrollbar code to state of master 2023-March-12

by porting back:
0.4.15-dev-5784-g 2aea4ab945 [NTUSER] Scrollbar.c pure whitespace fixes
0.4.15-dev-5680-g 5ad5737370 CORE-18050 [NTUSER] Delete temporary workarounds in co_IntSetScrollInfo() (#4985)
0.4.15-dev-5355-g 0484beb04b CORE-18593 [NTUSER] Don't redraw scrollbar if it is hidden command prompt (#4849)
0.4.15-dev-4492-g 03422451b3 Add '\n' to debug logs (partially, only the scrollbar.c part)
0.4.15-dev-3875-g 977c129f33 CORE-18048 [USER32] SetScrollPos should not bypass UserApiHook (#4372)
0.4.15-dev-3849-g fd28a69de6 CORE-17780 [WIN32SS] Store the scrollbar theming enabled flag in the scrollbar (#4367)
0.4.15-dev-3175-g 222acf5a3e CORE-17777 [NTUSER] Scrollbar.c, Avoid potential out-of-bounds-accesses in co_IntSetScrollInfo()
0.4.15-dev-3174-g dda9c3979e CORE-17769 'Rapps Listview manual resize may erroneously not draw the triangles sometimes'
0.4.15-dev-3147-g 3bf7e3ac13 CORE-17754 and CORE-17755 [NTUSER] Improve Themed Scrollbars by Minimizing Updates (#3953)
0.4.15-dev-3086-g 236649c626 CORE-16375 [UXTHEME][NTUSER] Fix flashing of scrollbar when scrolling (#3868)
0.4.15-dev-2375-g ffea5152e6 [WIN32SS][NTUSER] Fix an integer underflow within scrollbar info setting
0.4.14-dev-1134-g 00adb1a3f9 [WIN32SS] Improve Drawing Scrollbars
- CORE-14755 fixed, flashing scrollbar triangles (we know 131 affected apps just from rapps!)
- CORE-13931 fixed, FamiTracker invisible about-dlg
- CORE-14685 improves a bit, but is not entirely fixed
- CORE-11561 'Notepad scrollbars problem' fixed

This will also speed up NSIS installers that display their file-copy-progress by
a self-scrolling listview.

sdk/include/psdk/winuser.h

@@ -1216,6 +1216,7 @@ extern "C" {
 #define SIF_RANGE 1
 #define SIF_DISABLENOSCROLL 8
 #define SIF_TRACKPOS   16
+#define SIF_THEMED 128
 #define SWP_DRAWFRAME 32
 #define SWP_FRAMECHANGED 32
 #define SWP_HIDEWINDOW 128