Improve Dagger runner backend

[wingyplus]

Melange Pull Request Template

Functional Changes

• [x] Fixes failed to build package: unable to run package hello pipeline: unable to run pipeline: input: container.import resolve: recover: no manifest for platform linux/amd64 and tag because the runner doesn't build on correct platform.
• [x] Separate cache volume per platform.
• [x] TestUsability uses dagger.Client.Version to test the client can connect to engine.
• [x] Fix the typo in log to make it consistent.