gh-8252 test tests nothing

[Buristan]

tarantool/test/app-luatest/gh_8252_jit_off_on_macOS_by_default_test.lua

Line 5 in 1e1bf36

g.jit_off_on_macOS_by_default = function()

This test is silently ignored by the luatest since it is not started with the test_ prefix.

[ligurio]

Submitted a luatest issue tarantool/luatest#385.