Fixes bug causing validate_data to download data

[github-actions[bot]]

Coverage Report

File	Stmts	Miss	Cover	Missing
mlops
Experiment.py	126	15	88%	26, 46, 48, 53, 76–77, 113, 134, 163–166, 170–171, 178–179
ProjectFile.py	27	1	96%	25
mlops/data/tools
tools.py	20	16	20%	28–53
mlops/data/transforms
LoadImageXNATd.py	49	38	22%	19–24, 27–84
TOTAL	244	70	71%

Tests	Skipped	Failures	Errors	Time
15	2 :zzz:	0 :x:	0 :fire:	1m 44s :stopwatch: