QTWayland bug yet solved in Qt 6.3.0 for X11 (libvulkan.so not found)

SUMMARY
There is a QTWayland that has been solved in Qt 6.3.0 for X11. Is related to how QTWayland works in some distros when looking for "libvulkan.so" library. Some Linux distros, like openSUSE or Fedora, name that library as "libvulkan.so.1", so is not find by QT.
Issue is identified and solved here https://github.com/qt/qtbase/commit/888b75aa12e2cf35ee760bcf5cb1ed60fe0c0770 too and could be applied easily to Qt 5.15.x.

Many users have issues in applications when their distros have not "libvulkan.so" but "libvulkan.so.1" and it's really a headache for programmers to detect what's happening.

STEPS TO REPRODUCE
1. Launch an application installed from some distros repositories that needs "libvulkan.so"

OBSERVED RESULT
Usually, at console, application will show some message similar to:

initInstance: No Vulkan library available
Failed to create platform Vulkan instance

despite, in fact, Vulkan related packages and libraries are installed

EXPECTED RESULT
To search for "libvulkan.so.1" too and do not fail

ADDITIONAL INFORMATION
As a workaround, if user guess that this is the issue he has, he can launch application preceding it with this environment parameter:

QT_VULKAN_LIB=/path/to/libvulkan.so.1 application_needing_libvulkan.so