Fix Menu.append act different from SimpleMenuModel cause crash#7426

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waivital wants to merge 2 commits intonwjs:nw46from

waivital:fix-menu-append-behavior

Commits on Mar 26, 2020

Fix Menu.append act different from SimpleMenuModel cause crash
waivital
authored

Commits on Mar 27, 2020

Fix potential memory leak in Menu and MenuItems
waivital
committed