Schematic: more drag undo fixes

Drag was not clearing IS_CHANGED status of items that were moved by the
drag, but weren't selected or created by it.

Fixes: https://gitlab.com/kicad/code/kicad/-/issues/10845

eeschema/tools/sch_move_tool.cpp

@@ -524,9 +524,14 @@ int SCH_MOVE_TOOL::Main( const TOOL_EVENT& aEvent )
                                 // adding them.
                                 if( !foundLine->HasFlag( IS_CHANGED )
                                     && !foundLine->HasFlag( IS_NEW ) )
+                                {
                                     saveCopyInUndoList( (SCH_ITEM*) foundLine, UNDO_REDO::CHANGED,
                                                         true );
 
+                                    if( !foundLine->IsSelected() )
+                                        m_changedDragLines.insert( foundLine );
+                                }
+
                                 if( foundLine->GetStartPoint() == unselectedEnd )
                                     foundLine->MoveStart( splitDelta );
                                 else if( foundLine->GetEndPoint() == unselectedEnd )
@@ -807,8 +812,8 @@ int SCH_MOVE_TOOL::Main( const TOOL_EVENT& aEvent )
 
     } while( ( evt = Wait() ) ); //Should be assignment not equality test
 
-    // Save whatever new bend lines survived the drag
-    commitNewDragLines();
+    // Save whatever new bend lines and changed lines survived the drag
+    commitDragLines();
 
     controls->ForceCursorPosition( false );
     controls->ShowCursor( false );
@@ -1454,15 +1459,23 @@ void SCH_MOVE_TOOL::setTransitions()
 }
 
 
-void SCH_MOVE_TOOL::commitNewDragLines()
+void SCH_MOVE_TOOL::commitDragLines()
 {
     for( auto newLine : m_newDragLines )
     {
-        saveCopyInUndoList( newLine, UNDO_REDO::NEWITEM, true );
         newLine->ClearEditFlags();
+        saveCopyInUndoList( newLine, UNDO_REDO::NEWITEM, true );
+    }
+
+    // These lines have been changed, but aren't selected. We need
+    // to manually clear these edit flags or they'll stick around.
+    for( auto oldLine : m_changedDragLines )
+    {
+        oldLine->ClearEditFlags();
     }
 
     m_newDragLines.clear();
+    m_changedDragLines.clear();
 }
 
 

eeschema/tools/sch_move_tool.h

@@ -75,7 +75,7 @@ private:
     void setTransitions() override;
 
     ///< Saves the new drag lines to the undo list
-    void commitNewDragLines();
+    void commitDragLines();
 
     ///< Clears the new drag lines and removes them from the screen
     void clearNewDragLines();
@@ -91,6 +91,8 @@ private:
     std::map<SCH_LINE*, EDA_ITEMS> m_lineConnectionCache;
     ///< Lines added at bend points dynamically during the move
     std::unordered_set<SCH_LINE*> m_newDragLines;
+    ///< Lines changed by drag algorithm that weren't selected
+    std::unordered_set<SCH_LINE*> m_changedDragLines;
 
     ///< Used for chaining commands
     VECTOR2I              m_moveOffset;