Fix - allow th2 hist option to change palette

While hist for th2 equivalent to the color

Author: linev

modules/hist2d/TH2Painter.mjs

@@ -750,7 +750,7 @@ class TH2Painter extends THistPainter {
          this.interactiveRedraw('pad', 'drawopt');
       });
 
-      if (this.options.Color || this.options.Contour || this.options.Surf || this.options.Lego === 12 || this.options.Lego === 14)
+      if (this.options.Color || this.options.Contour || this.options.Hist || this.options.Surf || this.options.Lego === 12 || this.options.Lego === 14)
          this.fillPaletteMenu(menu, true);
    }
 

modules/hist2d/THistPainter.mjs

@@ -71,7 +71,7 @@ class THistDrawOptions {
       if (this.Mode3D)
          return this.Lego === 12 || this.Lego === 14 || this.Surf === 11 || this.Surf === 12;
 
-      if (this.Color || this.Contour || this.Axis)
+      if (this.Color || this.Contour || this.Hist || this.Axis)
          return true;
 
       return !this.Scat && !this.Box && !this.Arrow && !this.Proj && !this.Candle && !this.Violin && !this.Text;