Fix - do not store main painter in frame painter

Author: linev

modules/gpad/TFramePainter.mjs

@@ -1338,7 +1338,7 @@ const FrameInteractive = {
 
             fp.setLastEventPos(pnt);
          } else if (!this.v7_frame && ((kind=="x") || (kind=="y") || (kind=="z"))) {
-            exec_painter = this.getMainPainter(); // histogram painter delivers items for axis menu
+            exec_painter = this.getMainPainter(true); // histogram painter delivers items for axis menu
          }
       } else if (kind == 'painter' && obj) {
          // this is used in 3D context menu to show special painter
@@ -2412,7 +2412,7 @@ class TFramePainter extends ObjectPainter {
    /** @summary Fill context menu for the frame
      * @desc It could be appended to the histogram menus */
    fillContextMenu(menu, kind, obj) {
-      let main = this.getMainPainter(),
+      let main = this.getMainPainter(true),
           pp = this.getPadPainter(),
           pad = pp ? pp.getRootPad(true) : null;