uiautomationcore: Add stub UiaRegisterProviderCallback function.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=50508
Signed-off-by: Vijay Kiran Kamuju <infyquest@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
(cherry picked from commit 8f0349f25b
)
Signed-off-by: Michael Stefaniuc <mstefani@winehq.org>