Run logs should be downloadable in artifact form

### Describe the feature or problem you’d like to solve

Extracting this from https://github.com/cli/cli/issues/10551#issuecomment-2767010575

It would be useful if run logs could be downloaded in archived form, so that they could be consumed by an external tool. This would provide particular value to screenreader users, who have an escape hatch to tools they are already familiar with.