Pytato exec: don't wait #1764

Job	Run time
Mypy	1m 27s
Examples Conda Py3	1m 26s
Documentation	1m 24s
Tests for downstream project meshmode	1m 27s
Pylint	1m 22s
Tests for downstream project grudge	1m 21s
Pytest Conda Py3 Intel	1m 23s
Tests for downstream project mirgecom	2s
Pytest Conda Py3 POCL	1m 22s
Tests for downstream project mirgecom_examples	5s
Ruff	4s
Typos	3s
	11m 26s

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