Add BcastUntilActxArray #1773

Job	Run time
Ruff	7s
Typos	5s
Documentation	1m 53s
Examples Conda Py3	1m 22s
Mypy	1m 41s
Pylint	1m 36s
Pytest Conda Py3 Intel	2m 18s
Pytest Conda Py3 POCL	2m 22s
Tests for downstream project meshmode	11m 46s
Tests for downstream project grudge	10m 9s
Tests for downstream project mirgecom	2s
Tests for downstream project mirgecom_examples	4s
	33m 25s

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