/enchant adds an extra level if run at least twice at the same level

Steps to Reproduce

1. Grab any tool (e.g. sword)
2. Run /enchant with the respective enchantment at any level below the max (e.g. /enchant @s sharpness 1)
3. Run multiple times (at least 3)

Expected Result

The tool should be at the level stated in the command / or at the level in the command multiplied by the number of times the command was run (up to enchant limit)

Observed Result

The tool is 1 level higher than stated in the command (e.g. sword being at sharpness II)