Fix pasting ties

(taken from musescore#8848, which has some git issues)

Author: wizofaus

src/engraving/libmscore/note.cpp

@@ -1863,7 +1863,7 @@ bool Note::acceptDrop(EditData& data) const
            || (type == ElementType::FRET_DIAGRAM)
            || (type == ElementType::FIGURED_BASS)
            || (type == ElementType::LYRICS)
-           || e->isSpanner();
+           || (type != ElementType::TIE && e->isSpanner());
 }
 
 //---------------------------------------------------------

src/engraving/libmscore/tie.cpp

@@ -98,12 +98,12 @@ bool TieSegment::edit(EditData& ed)
 {
     SlurTie* sl = tie();
 
-    if (ed.key == Qt::Key_X) {
+    if (ed.key == Qt::Key_X && !ed.modifiers) {
         sl->setSlurDirection(sl->up() ? Direction::DOWN : Direction::UP);
         sl->layout();
         return true;
     }
-    if (ed.key == Qt::Key_Home) {
+    if (ed.key == Qt::Key_Home && !ed.modifiers) {
         ups(ed.curGrip).off = PointF();
         sl->layout();
         return true;