Fix: handle subpackage tags in is_backport

[IanButterworth]

Fixes #343

Needs tests.

[IanButterworth]

I think this needs to only regard old tags for the same package though.. so might need to be smarter..

[IanButterworth]

@tpoisot @cadojo can you check that this works on a monorepo package by changing the action to

      - uses: JuliaRegistries/TagBot@ib/is_backport_monorepo

and triggering via the workflow dispatch.

[tpoisot]

will do - later tonight or monday

[tpoisot]

Still not working - the first letter is chomped, and the action crashes because the output isn't a valid version string

[IanButterworth]

Do you have a link to a run?

[IanButterworth]

If you're referring to https://github.com/PoisotLab/SpeciesDistributionToolkit.jl/actions/runs/10856429667/job/30131050466 that appears to be using the latest release not this branch

[tpoisot]

That's the one, but the entry for the subdir I was attempting to release is definitely using the correct branch - I just checked the log

[IanButterworth]

Ah I forgot that you can't just try branches on this action, it has to be built.

I guess we just go for it and release this. The new function has a fail safe anyway.

Can you just do a code review and I'll go ahead. Thanks.

[cadojo]

I'll run the CI once this merges. Thank you so much for the fast fix! My only comment is to remember to remove the _is_backport: from the logging statement.