Bitmap cursors not supported on QtWayland

If a cursor is created as a bitmap cursor, this line gets an invalid/empty pixmap.

https://github.com/qt/qtwayland/blob/233098dc6f83e5fe187c16e73b30b863a8eb3359/src/client/qwaylandcursor.cpp#L253

Result is that no cursor is shown on screen under Wayland when a bitmap cursor is used. The size of the cursor is (0, 0) and Wayland complains that Qt attempts to mmap 0 bytes of memory for the cursor.

I tried converting bitmap to pixmap before creating cursor, but this result in an invalid format. Perhaps wayland doesn't support 1-bit cursors?

A workaround was to convert bitmap -> image -> pixmap and then set the mask using QPixmap::setMask(bitmap).