Update Bambu Lab X1 Carbon 0.4 nozzle.json

[hogum]

Reduce material leakage and support high-temperature consumables

[hogum]

如果为了安全，还可以添加一个判断，不过很多人都抱怨pla使用250度冲刷带来的气味较大
{if nozzle_temperature_range_high > 250}
M109 S[nozzle_temperature_range_high] ;set nozzle to common flush temp
{else}
M109 S250 ;set nozzle to common flush temp
{endif}