fix: use internal run ids for job/result endpoints (SBP-421)

[marius-mather]

Pull Request

Summary

SBP-421: now that we've implemented job queueing, workflow runs don't have a seqera ID initially. This PR changes all the job-related endpoints to expect and use the internal workflow run ID for lookups.

The backend is already providing the internal ID to the frontend for the job list, so we don't need frontend changes for this.

Changes

• Make clear when we are using WorkflowRun.id vs. WorkflowRun.seqera_run_id for lookups
• Use internal id as the initial ID for all workflow run endpoints
• Update delete/cancel endpoints to deal with queued/pending jobs, in addition to Seqera workflows

How to Test

Run uv run pytest

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have added tests that prove my fix is effective or that my feature works
• I have added or updated documentation where necessary
• I have run linting and unit tests locally
• The code follows the project's style guidelines

[vtnphan]

Thank you for a quick fix! Also tested locally, good to go!