Fix CraftBukkitFacet on 1.20.2

[56738]

In 1.20.2, send(Packet) was moved from ServerGamePacketListenerImpl to its new superclass ServerCommonPacketListenerImpl.

Because getDeclaredMethods doesn't return methods defined in superclasses, CraftBukkitFacet didn't work at all.
Changed MinecraftReflection#searchMethod to use getMethods instead of getDeclaredMethods.

[Machine-Maker]

I don't think this is a correct fix. getMethods only return the public methods which might break other things. I think a better fix would be to change the class that is being used to find the method to the common packet listener.

[56738]

I don't think this is a correct fix. getMethods only return the public methods which might break other things. I think a better fix would be to change the class that is being used to find the method to the common packet listener.

Replaced the fix with your suggested one: If ServerCommonPacketListenerImpl exists, the method is searched in that class instead.