Add ArrayContext.is_array_type #1943

Job	Run time
Pytest Conda Py3 Intel	2m 18s
Pytest Conda Py3 POCL	2m 23s
basedpyright	1m 47s
Typos	5s
Tests for downstream project grudge	11m 20s
Documentation	1m 55s
Tests for downstream project mirgecom_examples	6s
Tests for downstream project meshmode	11m 14s
Examples Conda Py3	1m 30s
Tests for downstream project mirgecom	4s
Ruff	7s
	32m 49s

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