chore: Fix NPE when running CometTPCHQueriesList directly #638

Job	Run time
macos-14(Silicon)/java 8-spark-3.2/java	1m 54s
ubuntu-latest/java 8-spark-3.4/rust	1m 39s
macos-14(Silicon)/java 17-spark-3.3/java	1m 52s
ubuntu-latest/java 8-spark-3.4/java	1m 41s
ubuntu-latest/java 8-spark-3.2/java	2m 11s
ubuntu-latest/java 17-spark-3.4/rust	1m 42s
ubuntu-latest/java 8-spark-3.3/java	1m 41s
ubuntu-latest/java 17-spark-3.4/java	1m 43s
macos-14(Silicon)/java 8-spark-3.4/rust	1m 40s
ubuntu-latest/java 11-spark-3.3/java	1m 40s
macos-14(Silicon)/java 8-spark-3.4/java	1m 52s
ubuntu-latest/java 17-spark-3.3/java	2m 8s
macos-14(Silicon)/java 17-spark-3.4/rust	1m 41s
macos-14(Silicon)/java 17-spark-3.4/java	1m 52s
${{ matrix.os }}/java ${{ matrix.java_version }}-spark-${{ matrix.spark-version }}/${{ matrix.test-target }}	0s
	25m 16s

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