feat: Enable Comet broadcast by default #514

Job	Run time
ubuntu-latest/java 8-spark-3.4/rust	5m 21s
macos-14(Silicon)/java 8-spark-3.2/java	4m 16s
ubuntu-latest/java 8-spark-3.4/java	4m 49s
ubuntu-latest/java 8-spark-3.2/java	4m 53s
macos-14(Silicon)/java 8-spark-3.4/rust	5m 49s
macos-14(Silicon)/java 17-spark-3.3/java	3m 51s
ubuntu-latest/java 8-spark-3.3/java	5m 8s
ubuntu-latest/java 17-spark-3.4/rust	5m 42s
macos-14(Silicon)/java 8-spark-3.4/java	5m 32s
ubuntu-latest/java 11-spark-3.3/java	5m 7s
ubuntu-latest/java 17-spark-3.4/java	4m 55s
macos-14(Silicon)/java 17-spark-3.4/rust	4m 25s
ubuntu-latest/java 17-spark-3.3/java	5m 10s
${{ matrix.os }}/java ${{ matrix.java_version }}-spark-${{ matrix.spark-version }}/${{ matrix.test-target }}	0s
macos-14(Silicon)/java 17-spark-3.4/java	5m 20s
	1h 10m 18s

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