Test tailcall + JIT on CI for 3.15 and 3.14

[Fidget-Spinner]

Feature or enhancement

Proposal:

See title. This saves us CI resources too as TC builds faster on clang.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-140889: Test tailcall and JIT in CI #140891
• [3.14] gh-140889: Test tailcall and JIT in CI (GH-140891) #140962
• gh-140889: Bump tailcall and JIT CI to llvm 20 #140963

[corona10]

@Fidget-Spinner Let's close this issue :)