Disposal pipe dispenser outputs both construction and finished objects

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Description of issue

Disposal pipe dispenser outputs path and constructed_path objects at the same time.

Difference between expected and actual behavior

Disposal pipe dispenser should not output two objects, only one.

Steps to reproduce

1. Spawn /obj/machinery/fabricator/pipe/disposal/filled.
2. Fabricate "disposal bin" or "disposal pipe segment".
3. Get both objects defined by path and constructed_path in recipe.

Specific information for locating

Length of time in which bug has been known to occur

Found today.

Client version, Server revision & Game ID

Client Version: 514 Server Revision: 895320c445a0847aa88ca9ce4b5065f783c105f4 - stable-nebula - 2024-02-16 Game ID: csi-dBT7 Current map: Tradeship Ocelot Alpha

Issue bingo

• [X] Issue could be reproduced at least once
• [ ] Issue could be reproduced by different players
• [X] Issue could be reproduced in multiple rounds
• [X] Issue happened in a recent (less than 7 days ago) round
• [X] Couldn't find an existing issue about this