Spear charge doesn't play a sound in first person if the HUD is hidden

Steps to Reproduce:

1. Set the perspective to first person

2. Without hiding the HUD, use the spear

3. Hide the HUD and use it again

Observed Results:
The sound is only played while the HUD is visible.

Expected Results:
The sound is played regardless of HUD visibility.

Notes: This is likely caused by the fact that the charge sound is an entity animation rather than tied to the charge action, making it unable to play if the model is unloaded