Add `@disjoint_base` (PEP 800) #2202

Job	Run time
Run tests (3.10)	7s
Run tests (3.9)	10s
Run tests (3.9.12)	13s
Run tests (3.12)	8s
Run tests (3.12.0)	18s
Run tests (3.13.0)	14s
Run tests (3.11)	12s
Run tests (3.10.4)	12s
Run tests (3.11.0)	16s
Run tests (pypy3.10)	17s
Run tests (3.13)	10s
Run tests (pypy3.9)	16s
Run tests (3.14)	16s
Run tests (pypy3.11)	20s
Create an issue if daily tests failed	0s
	3m 9s

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