ci: sweep remaining QLatin1String::toUtf8; embed version obj in oakengine.dll

- pointer.cpp/transition.cpp: same Qt 6.4 incompatibility as import.cpp
- Windows: DLLs cannot have undefined symbols, so the
  executable-provides-k_app_version trick does not link; embed
  olive-version-obj into oakengine on WIN32 (each module keeps its own
  copy)

app/widget/timelinewidget/tool/pointer.cpp

@@ -887,7 +887,7 @@ void PointerTool::finish_drag(TimelineViewMouseEvent *event)
 							oakengine_node_connect_command(
 								reinterpret_cast<OakEngineNode *>(it.value()),
 								reinterpret_cast<OakEngineNode *>(cp_in_transition),
-								QLatin1String(oakengine_transition_in_block_input_id()).toUtf8().constData(),
+								oakengine_transition_in_block_input_id(),
 								-1));
 					}
 
@@ -900,7 +900,7 @@ void PointerTool::finish_drag(TimelineViewMouseEvent *event)
 							oakengine_node_connect_command(
 								reinterpret_cast<OakEngineNode *>(it.value()),
 								reinterpret_cast<OakEngineNode *>(cp_out_transition),
-								QLatin1String(oakengine_transition_out_block_input_id()).toUtf8().constData(),
+								oakengine_transition_out_block_input_id(),
 								-1));
 					}
 				}