Obj array renames #1904

Job	Run time
Pytest Conda Py3 POCL	2m 23s
Ruff	8s
Typos	4s
basedpyright	1m 51s
Documentation	1m 48s
Tests for downstream project meshmode	11m 59s
Tests for downstream project mirgecom_examples	5s
Tests for downstream project mirgecom	13s
Examples Conda Py3	1m 27s
Tests for downstream project grudge	10m 20s
Pytest Conda Py3 Intel	2m 1s
	32m 19s

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