Fix project duration not updated on bin clip deletion.

Fixes #1383

src/bin/projectclip.cpp

@@ -1816,7 +1816,7 @@ bool ProjectClip::selfSoftDelete(Fun &undo, Fun &redo)
         }
         if (auto timeline = clip.second.lock()) {
             timeline->requestClipUngroup(clip.first, undo, redo);
-            timeline->requestItemDeletion(clip.first, undo, redo);
+            timeline->requestItemDeletion(clip.first, undo, redo, true);
         } else {
             qDebug() << "Error while deleting clip: timeline unavailable";
             Q_ASSERT(false);