WI Mary of Burgundy was born a boy instead?

In 13 February 1457 Isabella de Bourbon gave birth to her only child by Charles the Bold Duke of Burgundy... it was a girl and after her father's untimely death she became his heiress and suo jure Duchess of Burgundy leading to the partition of Burgundy between France and the Habsburgs...
WI Isabella gave birth to a boy instead of a girl???
Could he claim the Dukedom of Burgundy in 1477 after the battle of Nancy?
How is this altering French History?
 
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