Rename --repo argument to --selected-repo to avoid confusion in the resolver workflow

[tawago]

• This change is worth documenting at https://docs.all-hands.dev/
• Include this change in the Release Notes. If checked, you must provide an end-user friendly description for your change below

End-user friendly description of the problem this fixes or functionality that this introduces.
The command-line argument --repo was ambiguous, leading to token validation failures when running the resolver. By renaming it to --selected-repo, the expected format is now more explicit and less prone to errors.

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Give a summary of what the PR does, explaining any non-trivial design decisions.
Follow up of #7065

In #7065, the bug inside identify_token function was resolved by adding repo argument and associated validation; however, the main function of resolve_issue.py was passing the new argument as a incorrect string format to that function.

Within the file resolve_issue.py, repo can mean both {owner}/{repo} format string and single {repo} name. To avoid the confusion and to fix the bug properly, this PR tries to rename the argument.

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Link of any specific issues this addresses.

[tawago]

I kinda wanna add some e2e tests to make sure that the resolver workflow always works in all supported environments (github_token, PAT, gitlab token) but probably not in this PR's scope.

[enyst]

Looks good to me, thank you! I'd love it if @malhotra5 could take a quick look too.

[malhotra5]

This LGTM

The workflow file, however, will need to be updated on a future PR

The current changes to the resolver won't be available until a release is made (which is when the workflow file should get updated)

We should be using release SHA to manage this, but that hasn't been implemented yet

[tawago]

@malhotra5

Just to confirm:
Do you want me to create a separate PR for the workflow diff only? or This PR should get merged right before 0.29.0 release?

[malhotra5]

Do you want me to create a separate PR for the workflow diff only

Yes that would be greatly appreciated!

We'll merge this PR right away. The separate PR you create for the workflow diff will get merged right after the next release.

[malhotra5]

LGTM