Tests

Add support for pgf.documentclass rcParam #28078

Job	Run time
Python 3.11 on ubuntu-22.04 (Minimum Versions)	19m 18s
Python 3.11 on ubuntu-22.04	17m 39s
Python 3.12 on ubuntu-22.04-arm	12m 54s
Python 3.13 on ubuntu-22.04	18m 48s
Python 3.13t on ubuntu-22.04 Free-threaded	16m 37s
Python 3.12 on ubuntu-24.04	19m 1s
Python 3.11 on macos-13	22m 54s
Python 3.12 on macos-14	17m 49s
Python 3.13 on macos-14	17m 50s
Create issue on failure	0s
	2h 42m 50s

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