Bossbar allows storage of values larger than the maximum

The bug

Boss bars can store values greater than their maximum.

How to reproduce

1. Create a boss bar
2. Run /bossbar set <your_bossbar> max 1
3. Run /bossbar set <your_bossbar> value 1000
4. Run /bossbar get <your_bossbar> value
   → The value is 1000, even though the maximum is only 1