add TaggedExpression #3296

Job	Run time
Ruff	6s
Mypy	1m 24s
Pylint	3m 17s
Documentation	1m 31s
Tests for downstream project Firedrake	18m 53s
Conda Examples	1m 53s
Tests for downstream project arraycontext	1m 4s
Conda Pytest (ubuntu-latest)	3m 56s
Conda Pytest with Intel CL	4m 10s
Tests for downstream project meshmode	1m 5s
Conda Pytest (macos-latest)	3m 13s
Tests for downstream project grudge	1m 3s
Conda Pytest without arg check	4m 5s
Tests for downstream project pytential	1m 4s
Conda Pytest Twice (for cache behavior)	5m 17s
Typos	6s
Tests for downstream project pytato	1m 3s
Validate CITATION.cff	7s
	53m 17s

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