Tests

Fix typo in backend_ps.py comment: change 'and them scale them' to 'and then scale them' #28274

Job	Run time
Python 3.11 on ubuntu-22.04 (Minimum Versions)	19m 5s
Python 3.11 on ubuntu-22.04	17m 16s
Python 3.12 on ubuntu-22.04-arm	11m 26s
Python 3.13 on ubuntu-22.04 (Extra TeX packages)	19m 59s
Python 3.13t on ubuntu-22.04 Free-threaded	17m 4s
Python 3.12 on ubuntu-24.04	18m 33s
Python 3.11 on macos-13	21m 59s
Python 3.12 on macos-14	15m 27s
Python 3.13 on macos-14	21m 0s
Create issue on failure	0s
	2h 41m 49s

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