usdImagingGL: Disable failing test from change 2351369 #18

Job	Run time
Linux (cp38, /opt/python/cp38-cp38/bin/python, 3.8)	26m 30s
macOS (3.8, python3.8, cp38)	1m 24s
Linux (cp39, /opt/python/cp39-cp39/bin/python, 3.9)	25m 54s
macOS (3.9, python3.9, cp39)	1m 41s
Windows (3.8, cp38)	27m 49s
Linux (cp310, /opt/python/cp310-cp310/bin/python, 3.10)	25m 49s
macOS (3.10, python3.10, cp310)	1m 41s
Windows (3.9, cp39)	28m 16s
Linux (cp311, /opt/python/cp311-cp311/bin/python, 3.11)	26m 15s
macOS (3.11, python3.11, cp311)	1m 40s
Windows (3.10, cp310)	27m 10s
Linux (cp312, /opt/python/cp312-cp312/bin/python, 3.12)	26m 27s
macOS (3.12, python3.12, cp312)	1m 27s
Windows (3.11, cp311)	27m 39s
Windows (3.12, cp312)	27m 40s
CollectPackages	13s
Test	0s
	4h 37m 35s

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