shiboken2/clang: Fix build with clang 16

shiboken2/clang: Fix build with clang 16

clang 16 returns more elaborated types instead of fully qualified type
names. Qualify elaborated types when retrieving the type name.

[ChangeLog][shiboken6] Support for libclang version 16 has been added.

Task-number: PYSIDE-2288
Pick-to: 6.5 5.15
Change-Id: Ibd428280180967f11d82a72159e744c016afc927
Reviewed-by: Christian Tismer <tismer@stackless.com>
(cherry picked from commit 44ef1859214c66861a251d4a0faf5c38dc050850)

Gbp-Pq: Name shiboken2-clang-Fix-build-with-clang-16.patch