Check for both `CF_TEXT` and `CF_UNICODETEXT` in
`GHOST_DropTargetWin32::getGhostType` because, unlike for the clipboard,
Windows does not synthesize `CF_TEXT` from `CF_UNICODETEXT` and vice
versa for drag and drop operations. Since `getGhostData` already
supports `CF_UNICODETEXT`, this is all that's necessary to make it work.
I encountered this issue when trying to drag text from Notepad++ into
Blender's text editor.
Pull Request: https://projects.blender.org/blender/blender/pulls/138524
d73950790c