[1.20.5->1.20.3] show_item tag is not handled

[Pantera07]

'/viaversion dump' Output

https://dump.viaversion.com/a1201c889f00d83362dc8894a03f5b943a8be2d8b1e84fa5982254fa9983fc29

Console Error

none

Bug Description

show_item tag is not handled

Steps to Reproduce

/tellraw @p {"hoverEvent":{"action":"show_item","contents":{"components":{"minecraft:container":[{"item":{"components":{"minecraft:fireworks":{"explosions":[],"flight_duration":2}},"count":1,"id":"minecraft:firework_rocket"},"slot":0},{"item":{"components":{"minecraft:fireworks":{"explosions":[],"flight_duration":3}},"count":1,"id":"minecraft:firework_rocket"},"slot":26}]},"count":1,"id":"minecraft:shulker_box"}},"text":"Test"}

/tellraw @p {"hoverEvent":{"action":"show_item","contents":{"components":{"minecraft:fireworks":{"explosions":[],"flight_duration":2}},"count":1,"id":"minecraft:firework_rocket"}},"text":"Test"}

Expected Behavior

show_item tag should not disappear.

Additional Server Info

No response

Checklist

• [X] Via plugins are only running on EITHER the backend servers (e.g. Paper) OR the proxy (e.g. BungeeCord), not on both.
• [X] I have included a ViaVersion dump.
• [X] If applicable, I have included a paste (not a screenshot) of the error.
• [X] I have tried a build from https://ci.viaversion.com/ and the issue still persists.

[Barvalg]

[FlorianMichael]

Already known, I still didn't came arround to write the needed conversions, but it's on my TODO

[kennytv]

Tracking this here instead https://github.com/ViaVersion/ViaBackwards/issues/788