add TaggedExpression #3295

Job	Run time
Documentation	1m 34s
Tests for downstream project Firedrake	1m 22s
Conda Examples	1m 35s
Tests for downstream project arraycontext	1m 6s
Tests for downstream project meshmode	1m 6s
Mypy	1m 24s
Pylint	1m 33s
Tests for downstream project grudge	1m 6s
Conda Pytest (ubuntu-latest)	1m 27s
Conda Pytest (macos-latest)	1m 34s
Tests for downstream project pytential	1m 7s
Conda Pytest with Intel CL	1m 29s
Tests for downstream project pytato	1m 6s
Conda Pytest without arg check	1m 32s
Conda Pytest Twice (for cache behavior)	1m 33s
Ruff	9s
Typos	3s
Validate CITATION.cff	5s
	20m 51s

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