fix(client): load current data

[mockdot]

Description

• Load initial values from metadata rather than the variables.

Checklist

• I have personally loaded this code into an updated Qbox project and checked all of its functionality.
• My code fits the style guidelines.
• My PR fits the contribution guidelines.

[Manason]

I would double check that core has a default for these values. Although I believe the PlayerData object doesn't list these as optional so if there was an issue we could just deal with it then

[mockdot]

I would double check that core has a default for these values. Although I believe the PlayerData object doesn't list these as optional so if there was an issue we could just deal with it then

We are setting it here (server/players):
PlayerData.metadata.health = PlayerData.metadata.health or 200
PlayerData.metadata.hunger = PlayerData.metadata.hunger or 100
PlayerData.metadata.thirst = PlayerData.metadata.thirst or 100
PlayerData.metadata.stress = PlayerData.metadata.stress or 0