fix #286188: text on prebend misplaced

For some reason, we place the text on prebends differently than others,
and while the code worked in 2.3.2, it no longer does,
and I think it has to do with changes made for screen scaling.
Fixing the screen scaling is possible but hard to test
and hard to guarantee it will be correct on all systems.
So instead, I am fixing this by changing the code that places the text
to use the same approach as other bends:
setitng the alignment to bottom center
rather than try to align ourselves using font metrics.

libmscore/bend.cpp

@@ -188,7 +188,6 @@ void Bend::draw(QPainter* painter) const
 
       QFont f = font(_spatium * MScore::pixelRatio);
       painter->setFont(f);
-      QFontMetrics fm(f, MScore::paintDevice());
 
       qreal x  = noteWidth + _spatium * .2;
       qreal y  = -_spatium * .8;
@@ -214,9 +213,18 @@ void Bend::draw(QPainter* painter) const
                   int idx = (pitch + 12)/25;
                   const char* l = label[idx];
                   QString s(l);
+#if 1
+                  painter->drawText(QRectF(x2, y2, .0, .0), Qt::AlignHCenter | Qt::AlignBottom | Qt::TextDontClip, s);
+#else
+                  // this is the code used originally,
+                  // and it worked in 2.3.2, but fails currently - textWidth & textHeight are too large
+                  // presumably they would need to be scaled accoridng to pixelRatio, DPI, and/or SPATIUM20
+                  // now that the font & fontmetrics are also scaled
+                  QFontMetrics fm(f, MScore::paintDevice());
                   qreal textWidth = fm.width(s);
                   qreal textHeight = fm.height();
                   painter->drawText(QRectF(x2 - textWidth / 2, y2 - textHeight / 2, .0, .0), Qt::AlignVCenter|Qt::TextDontClip, s);
+#endif
 
                   y = y2;
                   }