Partially restore recursive forwarding in mappers #2582

Job	Run time
Conda Examples	6s
Conda Examples	3m 18s
Tests for downstream project meshmode	3s
Tests for downstream project meshmode	15m 9s
Flake8	6s
Flake8	18s
Tests for downstream project mirgecom	5s
Tests for downstream project mirgecom	6s
Tests for downstream project arraycontext	4s
Tests for downstream project arraycontext	4m 55s
Documentation	5s
Documentation	3m 10s
Mypy	5s
Mypy	2m 41s
Pylint	4s
Pylint	2m 53s
Conda Pytest	8s
Conda Pytest	8m 59s
	42m 15s

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