bpo-40521: Disable list free list in subinterpreters (GH-19959)

bpo-40521: Disable list free list in subinterpreters (GH-19959) · python/cpython@b7aa23d

Original file line number	Diff line number	Diff line change
`@@ -98,8 +98,15 @@ list_preallocate_exact(PyListObject *self, Py_ssize_t size)`
`98`	`98`
`99`	`99`	`/* Empty list reuse scheme to save calls to malloc and free */`
`100`	`100`	`#ifndef PyList_MAXFREELIST`
`101`		`-#define PyList_MAXFREELIST 80`
	`101`	`+# define PyList_MAXFREELIST 80`
`102`	`102`	`#endif`
	`103`	`+`
	`104`	`+/* bpo-40521: list free lists are shared by all interpreters. */`
	`105`	`+#ifdef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS`
	`106`	`+# undef PyList_MAXFREELIST`
	`107`	`+# define PyList_MAXFREELIST 0`
	`108`	`+#endif`
	`109`	`+`
`103`	`110`	`static PyListObject *free_list[PyList_MAXFREELIST];`
`104`	`111`	`static int numfree = 0;`
`105`	`112`