Fix: Show correct names above players head

[v42-Josh]

Describe Pull request
Show names are showing other names above people's head, this is an small bug.

If the player is too far away to get the server id it returns -1. If you use -1 on getplayerped then it returns your ped, that is changing your name and ID to show someone else's. With one simple line we can fix it,

Questions (please complete the following information):

• Have you personally loaded this code into an updated qbcore project and checked all it's functionality?
  Yes.
• Does your code fit the style guidelines?
  Yes
• Does your PR fit the contribution guidelines?
  Yes

[GhzGarage]

What did you change? Can't tell

[v42-Josh]

Added the line if playeridx ~= -1 then on line 41.

If the player is too far away to get the server id it returns -1. If you use -1 on getplayerped then it returns your own ped.

[github-actions]

This PR has had 60 days of inactivity & will close within 7 days