TechDraw: changed CosmeticVertex point picker dashed circle to filled dot. (#20095)

* techdraw: changed the cosmetic vertex shape

* add back the call to prepareGeometryChange

* add getVertexSize and getLineWidth methods to QGIViewPart

* use doubles for sizes

* update setRadius in QGMarker to use double instead of float

src/Mod/TechDraw/Gui/QGTracker.cpp

@@ -41,7 +41,9 @@
 
 #include "PreferencesGui.h"
 #include "QGTracker.h"
+#include "QGIVertex.h"
 #include "QGIView.h"
+#include "QGIViewPart.h"
 #include "QGSPage.h"
 #include "Rez.h"
 #include "ZVALUE.h"
@@ -438,12 +440,15 @@ void QGTracker::setPoint(std::vector<QPointF> pts)
         return;
     }
     prepareGeometryChange();
-    QPainterPath newPath;
-    QPointF center = pts.front();
-    double radius = 50.0;
-    newPath.addEllipse(center, radius, radius);
-    setPath(newPath);
-    setPrettyNormal();
+
+    auto point = new QGIVertex(-1);
+    point->setParentItem(this);
+    point->setPos(pts.front());
+    point->setRadius(static_cast<QGIViewPart *>(m_qgParent)->getVertexSize());
+    point->setNormalColor(Qt::blue);
+    point->setFillColor(Qt::blue);
+    point->setPrettyNormal();
+    point->setZValue(ZVALUE::VERTEX);
 }
 
 std::vector<Base::Vector3d> QGTracker::convertPoints()