AUTOUIC: Revert "Fix internal paths of generated ui_foo.h files"

Revert commit 10668f26c9 (AUTOUIC: Fix internal paths of generated
ui_foo.h files, 2022-05-21, v3.24.0-rc3~20^2).  It broke some existing
projects that use more than one `.ui` file of the same name.

Fixes: #23759
Issue: #23523
1 file changed