Bug fix: `dolt_reset()` should commit the active transaction

[fulghum]

Fixes: https://github.com/dolthub/dolt/issues/6272

[coffeegoddd]

@fulghum DOLT

comparing_percentages
100.000000 to 100.000000

version	result	total
4759351	ok	5937457

version	total_tests
4759351	5937457

correctness_percentage
100.0