[Bug 55281] New: `showInTaskbar` Win32 API is unsupported.

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55281

Bug ID: 55281
           Summary: `showInTaskbar` Win32 API is unsupported.
           Product: Wine
           Version: 8.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 74893
  --> https://bugs.winehq.org/attachment.cgi?id=74893
Logs.

Per
https://github.com/yereverluvinunclebert/Panzer-Earth-gauge-VB6/issues/3#iss...,
hooking into the relevant Win32 APIs to dynamically enable/disable the
`showInTaskbar` preference at runtime works on Windows 7 and 10, but not Wine
3.12.

Although the logs have been attached as HTML and text files within an
XZ-compressed TAR archive, the relevant part of the logs is undermentioned:

```log
0214:fixme:ole:CLSIDFromProgIDEx L"Scripting.FileSystemObject", 005FEAEC:
semi-stub
0214:fixme:scrrun:filesys_QueryInterface Unsupported interface
{7fd52380-4e07-101b-ae2d-08002b2ec713}
0214:fixme:scrrun:filesys_QueryInterface Unsupported interface
{37d84f60-42cb-11ce-8135-00aa004bb851}
0214:fixme:ole:CLSIDFromProgIDEx L"Scripting.FileSystemObject", 005FEAEC:
semi-stub
0214:fixme:scrrun:filesys_QueryInterface Unsupported interface
{7fd52380-4e07-101b-ae2d-08002b2ec713}
0214:fixme:scrrun:filesys_QueryInterface Unsupported interface
{37d84f60-42cb-11ce-8135-00aa004bb851}
```