Tests

ENH: Allow to register standalone figures with pyplot #29519

Job	Run time
Python 3.13 on ubuntu-22.04 (Extra TeX packages)	18m 42s
Python 3.11 on ubuntu-22.04 (Minimum Versions)	17m 46s
Python 3.12 on ubuntu-24.04	18m 3s
Python 3.13 on macos-14	14m 45s
Python 3.12 on macos-14	17m 32s
Python 3.11 on macos-13	27m 1s
Python 3.11 on ubuntu-22.04	15m 22s
Python 3.12 on ubuntu-22.04-arm	11m 36s
Python 3.13t on ubuntu-22.04 Free-threaded	16m 30s
Create issue on failure	0s
	2h 37m 17s

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