Spell point effects increase maximum repeatedly when spent uses are edited #164

When editing the number of spell point uses spent inside the feature any effects adding to the spell point maximum are applied again.

Steps to reproduce the behavior:

1. Open a character with spell points and give them an effect that increases the number of maximum spell points.
2. Open the spell points feature on that character and edit the number of spent spell points (increasing or decreasing works)
3. See max value increased by the effects bonus each time.

It makes sense for the maximum value to increase if the maximum value is edited when an effect is meant to increase it but the spent value changing while the feature is open shouldn't affect the max value.

Screenshots
Spell points with a +7 bonus from effects

Spell points after setting spent uses to 0

No Errors appear in console.

Versions
Foundry VTT 13.351
D&D5e System version: 5.2.3
Spell Points module version: 3.3.01