Merge pull request #5688 from kwvanderlinde/bugfix/5674-backport-to-1.18

For linear drawing tools, force the foreground mode to be solid

Author: kwvanderlinde

src/main/java/net/rptools/maptool/client/tool/drawing/DrawingTool.java

@@ -203,6 +203,9 @@ public void paintOverlay(ZoneRenderer renderer, Graphics2D g) {
           pen.setPaint(new DrawableColorPaint(Color.white));
           pen.setBackgroundPaint(new DrawableColorPaint(Color.white));
         }
+        if (isLinearTool()) {
+          pen.setForegroundMode(Pen.MODE_SOLID);
+        }
 
         drawable.draw(renderer.getZone(), g2, pen);