feat: Enable Comet broadcast by default #491

Job	Run time
ubuntu-latest/java 8-spark-3.2/java	45m 45s
ubuntu-latest/java 8-spark-3.4/rust	5m 20s
ubuntu-latest/java 8-spark-3.3/java	48m 4s
ubuntu-latest/java 8-spark-3.4/java	43m 4s
ubuntu-latest/java 11-spark-3.3/java	45m 54s
macos-14(Silicon)/java 8-spark-3.4/rust	4m 17s
ubuntu-latest/java 17-spark-3.4/rust	5m 48s
ubuntu-latest/java 17-spark-3.3/java	44m 1s
macos-14(Silicon)/java 8-spark-3.4/java	35m 58s
ubuntu-latest/java 17-spark-3.4/java	43m 17s
macos-14(Silicon)/java 17-spark-3.4/rust	5m 4s
macos-14(Silicon)/java 17-spark-3.4/java	40m 31s
macos-14(Silicon)/java 8-spark-3.2/java	34m 15s
${{ matrix.os }}/java ${{ matrix.java_version }}-spark-${{ matrix.spark-version }}/${{ matrix.test-target }}	0s
macos-14(Silicon)/java 17-spark-3.3/java	36m 41s
	7h 17m 59s

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