Describe the bug
You can see the particles and hear the jetpack sound if the player is in spectator.

To Reproduce
Steps to reproduce the behavior:

1. Equip Jetpack
2. Go into spectator
3. Press Space

Expected behavior
The jetpack should be hidden and not make any particles or sound.

Screenshots / Scripts / Logs

Versions (please complete the following information):

• Minecraft: 1.16.5
• Forge: 36.2.20
• Cucumber: 4.1.12
• Iron Jetpacks: 4.2.3

This is fixed in the latest version for 1.18. I'm going to leave this open for now just incase I end up releasing another version for 1.16.

I'm going to close this as I don't plan on releasing another 1.16 version.