Add adjustments so PDF print matches screen position of overbars.

This is somewhat disturbing, but I can't figure out
why it's needed.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/22172

common/plotters/PDF_plotter.cpp

@@ -2464,9 +2464,12 @@ void PDF_PLOTTER::drawOverbars( const std::vector<OVERBAR_INFO>& aOverbars, cons
         // Base vertical offset distance in device units (baseline -> default overbar position)
         double barOffset = aFontMetrics.GetOverbarVerticalPosition( overbar.fontSize.y );
 
-        // Adjust further for outline fonts
+        // Adjust further to match screen drawing.  This is somewhat disturbing, but I can't figure
+        // out why it's needed.
         if( overbar.isOutline )
-            barOffset += overbar.fontSize.y * 0.25; // extra raise for outline font
+            barOffset += overbar.fontSize.y * 0.16;
+        else
+            barOffset += overbar.fontSize.y * 0.32;
 
         // Mirror the text vertical alignment adjustments used for baseline shifting.
         // Earlier logic scales baseline adjustment: CENTER ~2x, TOP ~4x. We apply proportional