tst_assimpplugin: add test for morph target import


Pick-to: 6.12 6.11 6.8
Change-Id: I9a71cbe753327c2558e5f3f6670532293fb592f5
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>
commit5e81a4a0780542c0c024e54c6d692195038e8bb6
parent7be78fa243e257315be76c5a1c5a332194042f94
authorMauro Persano <mauro.persano@kdab.com>
committerMauro Persano <mauro.persano@kdab.com>
commit timeWed, 7 Oct 2026 22:23:21 +0000