[MC-300269] Waxing/Unwaxing Copper Golems does not grant Wax On/Off advancements

Basically what it says on the tin. (Un)waxing them should grant the advancement, but does not.

Environment

Java 21, macOS 15.5

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We are tracking this issue in MC-300096 and MC-300099, so this ticket is being resolved and linked as a duplicate.

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