[fixed] r4357: Japanese: castle keeps playing "new worker units created" sound

[tomreyn]

I noticed today that on r4357, when you play Japanese and create a worker, the castle will repeatedly play back the sound which indicates that a new worker was created while it is producing a new worker. The sound plays back roughly every three seconds while new a worker is being produced. This differs from the behaviour in 3.7.1, earlier versions and actually also somewhat recent revisions where this sound was only played back once when the entire production cycle of a new worker ended.

[tomreyn]

This is [fixed] as part of the changes in r4363.