[llvm] workflows: Automatically make backport requests from merged PRs (PR #126993)

[Nikita Popov via llvm-commits]

https://github.com/nikic commented:

A possible problem here is that some PRs require also cherry-picking a separate test commit. In that case adding them to the milestone will always produce an incorrect first cherry-pick command.

https://github.com/llvm/llvm-project/pull/126993